A million people joined world leaders including David Cameron in a huge unity rally on the streets of Paris today after 17 deaths in a series of terror attacks
The fugitive partner of the Paris supermarket gunman Amedy Coulibaly was believed to have fled to join ISIS fighters in Syria.
An international hunt was under way for Hayat Boumeddiene, 26, after she slipped into the war-torn country from Turkey.
Turkish intelligence said they believed Boumeddiene flew to Istanbul on January 2 – five days before the Charlie Hebdo killings.
She then travelled on to the Turkish city of Sanliurfa near the Syrian border on January 4 where officials said “she then disappeared”.
Boumeddiene, who has become one of the world’s most wanted women, was described as “armed and dangerous” when she was initially linked to last week’s shootings.
Attractive Boumeddiene was a supermarket cashier when she met the muscle-bound Coulibaly.
Hayat Boumeddiene and Amedy CoulibalyFanatics: Hayat Boumeddiene is on the run and Amedy Coulibaly died in assault on store
After marrying him in a religious ceremony not recognised by the French state in 2009, she became radicalised and ditched her beach bikinis in favour of a burkha.
Pictures have now emerged of her in a full-veil wielding a powerful crossbow.
Hayat BoumeddieneDeadly weapon: Hayat Boumeddiene pictured with a crossbow
The couple lived in a rundown first-floor flat in Fontenay aux-Roses near Paris.
One of her neighbours told us: “She always seemed nice and polite. I can’t believe she’s involved in anything as terrible as this. It’s shocking.”
A German newspaper in the northern port city of Hamburg that reprinted Mohammed cartoons from the French satirical paper Charlie Hebdo was the target of an arson attack early Sunday, police said.
No one was hurt.
"Rocks and then a burning object were thrown through the window," a police spokesman told AFP. "Two rooms on lower floors were damaged but the fire was put out quickly."
The daily, the Hamburger Morgenpost, printed three Charlie Hebdo cartoons following the massacre in Paris.
The headline read: “This much freedom must be possible.”
Dozens of world leaders will join a huge unity rally in Paris today.
Police are expecting at least a million people on the streets to protest against this week's shootings.
Pictured (left to right): German Chancellor Angela Merkel, British Prime Minister David Cameron, Spanish Prime Minister Mariano Rajoy, EU parliament president Martin Schulz, Italian Prime Minister Matteo Renzi, European Commission chief Jean-Claude Juncker, Niger's President Mahamadou Issoufou, French President Francois Hollande, Belgian Prime Minister Charles Michel, Dutch Prime Minister Mark Rutte, Malian President Ibrahim Boubacar Keita, Denmark's Prime Minister Helle Thorning-Schmidt, US Attorney General Eric Holder, NATO Secretary General Jens Stoltenberg, European Council president Donald Tusk, Turkish Prime Minister Ahmet Davutoglu, Swiss President Simonetta Sommaruga, Russian Foreign Minister Sergei Lavrov, Albanian Prime Minister Edi Rama, Bosnian Foreign Minister Zlatko Lagumdzija, Croatian Prime Minister Zoran Milanovic, Kosovar President Atifete Jahjaga, Swedish Prime Minister Stefan Lofven, Israeli Foreign Minister Avigdor Lieberman, Ukrainian President Petro Poroshenko, Moroccan Foreign Minister Salaheddine Mezouar, Emirati Foreign Minister Sheikh Abdullah bin Zayed al-Nahyan, Tunisian Prime Minister Mehdi Jomaa, Greek Prime Minister Antonis Samaras and Gabonese President Ali Bongo
Here are some pictures of the scene at the Morgenpost daily newspaper in Hamburg.
Fortunately no one was hurt after an arson attack on the editorial offices but the damage looks considerable.
Extraordinary security already in place in Paris. Around 1,900 police and 1,500 soldiers to protect world leaders and the 1million on the march.
So many people expected there will be two separate routes to ease congestion. Still unclear which route Cameron/Merkel/Hollande etc will take.
Here in the Place de la Republique there are already dozens of TV crews and a couple of early flag-waving Parisians.
These are the four hostages killed by the Jewish supermarket siege in Paris on Friday.
Left to right: Yoav Hattab, 21, François-Michel Saada, 60, Yohan Cohen, 22, and Philippe Braham, 40.
Tributes have flooded in to the men in the past 48 hours.
Cohen's girlfriend Sharon Seb changed the words on her profile picture to read "Je Suis Yohan".
David Cameron is on his way to Paris for today's rally.
He says the murders "will not crush our spirit or our values"
I'm on my way to Paris to march with the French people. The #CharlieHebdo murders will not crush our spirit or our values.
— David Cameron (@David_Cameron) January 11, 2015 
There are fears Britain's terror threat level could increase from "severe" to "critical" - meaning an attack is "imminent" - in the wake of the Paris shootings today.
A number of links between the Paris jihadis and British extremists have emerged in the aftermath of this week's bloodshed.
Cherif Kouachi - who killed 16 people in the Charlie Hebdo massacre with his brother Said - is believed to have been recruited by notorious al-Qaeda commander Djamel Beghal while they were in French prison together.
Beghal - caged for his role in a plot to blow up the US embassy in the city - was banned from the UK on grounds of national security in 2009.
Beghal was part of extreme GIA offshoot Takfir Wal Hijra – loyal to al-Qaeda and led by Osama bin Laden’s deputy Ayman al-Zawahiri.
He moved to Leicester in 1997 and built up a terror cell.
He made visits to the notorious Finsbury Park Mosque in London where hook-handed al-Qaeda henchman Abu Hamza, jailed for life on Friday for supporting terrorism, preached murder.
Pictures have also emerged of Paris killer Amedy Coulibaly posing with mentor Djemal Beghal before he shot dead four hostages in a supermarket. The pair were first photographed together at the same site in Murat, France, by police in 2010.
Thousands of police and soldiers will be on duty for today's march.
French Prime Minister Manuel Valls said: "It will be a rally which will shout and express its love and freedom and tolerance. It will be a cry for freedom."
Police checks underway along the route of the Paris march today - massive logistical and security challenge pic.twitter.com/HWmGWLB17q
— Tom Parmenter (@TomSkyNews) January 11, 2015 
A video has emerged online showing Paris supermarket killer Amedy Coulibaly pledging allegiance to the Islamic State.
Surrounded by an arsenal of weapons, the Senegalese-born Frenchman justifies his actions in footage filmed some time before this week's atrocity.
Coulibaly was shot dead by police on Friday after holding a dozen people hostage in a Jewish supermarket.
The video reveals Coulibaly's Arabic name as "Abou Bassir Abdallah al-Ifriqi"
The footage, which lasts 7 minutes and 17 seconds, has similarly high production values as the Islamic State clips which have featured British captive John Cantlie and the beheadings of several Western hostages.
It features Coulibaly speaking to the camera in a mixture of French and Arabic in a low voice.
It is intercut with proclamations such as "Allah is stronger in might and in punishment severe" and "Whatever you spend in the cause of Allah will be fully reimbursed and you will not be wronged".
The video opens with a quote from the Koran:
"And prepare against them whatever you are able of power and of steeds of war by which you may terrify the enemy of Allah and your enemy and others besides them whom you do not know [but] whom Allah knows.
"And whatever you spend in the cause of Allah will be fully repaid to you, and you will not be wronged." 8:60
In French, a series of credits read: "Soldier of the Caliphate"
"Amedy Coulibaly.
"Abou Bassir Abdallah al-Ifriqi
"Architect of the blessed attacks of Montrouge where he executed a policeman on January 8"
We are just in the process of translating Coulibay's comments to the camera.
But at one point, it is clear he makes to reference to the Charlie Hebdo shootings, and the killing of a policewoman in Paris.
This would indicate this part of the video was filmed while Coulibaly was on the run from police and before the supermarket siege
He says: "We are a team, in league together, with the brothers. Me I went out a little against the police too. So that’s that.
"We did some things together, some things separately to have most impact.
"We have managed to be synchronised together, to come out at the same time, because we are close in the same business.
"Why did you attack France, CharlieHebdo and a Jewish grocery? What we are in the process of doing is completely legitimate considering what they do. …It has been completely deserved for a long time.
"For what you have done to the Caliphate, for what you have done to the Islamic State, we are attacking you."
In the first part of the video, Coulibaly is seen wearing traditional clothing, sitting under the Islamic State flag.
He pledges allegiance to the Islamic State and to leader Abu Bakr al-Baghdadi.
Later, Coulibaly is wearing a black jacket and hat sitting next to a Kalashnikov and says that "everything we are doing is legitimate, you cannot attack and not get anything back in return."
"You and your coalition bomb civilians and fighters everyday," he said, "It is you that decides what happens on earth eh? No. We cannot let you do that. We will fight back."
Later Coulibaly appears to make further reference to the Charlie Hebdo massacre, asking: "What are you you doing when our Prophet is so seriously insulted?
"What are you doing when our sisters are being raped, when entire populations are being massacred?
"I've been to many mosques in Paris which are full of vigorous men who can defend Islam.
"Why is it, when we have millions of young men, we can't defend the prophet?"
Here is a full transcription we can now give you a full description and translation of its content:
MESSAGE ON SCREEN: Which group are you linked to and do you have an Emir?
Coulibaly: "I am pledging my allegiance to the Caliph of the Muslims, Abu Bakr al Baghdadi.
"I have made a declaration of allegiance to the Caliph and the declaration of a Caliphate. "
"I give myself to (LONG LIST OF NAMES IN ARABIC WHICH HE STRUGGLES TO READ AND PRONOUNCE).
MESSAGE ON SCREEN: "Are you linked to the brothers who attacked CharlieHebdo?"
Coulibaly (Wearing camouflaged body armour): "We are a team, in league together. I am with the team who did Charlie Hebdo.
"I went out a little against the police too. So that’s that. We did some things together, some things separately to have most impact. (Sound of TV news in the background in which newsreader can be clearly heard talking about the attacks).
"We have managed to be synchronised together, to come out at the same time, because we are close in the same business.
"Why did you attack France, CharlieHebdo and a Jewish grocery? (Wearing black leather jacket, black hat and gloves with his AK47 lent next to him against a white wall.)
"What we are in the process of doing is completely legitimate considering what they do... It has been completely deserved for a long time.
"For what you have done to the Caliphate, for what you have done to the Islamic State, we are attacking you.
"You cannot attack us and expect nothing back in return. So, the victims.
"As if you don’t understand why this is happening, for a few dead. This is for you and your coalition, with you at its head.
"You kill there regularly, you use your force, you kill our soldiers. Why? Because we live by Sharia.
"In our state we have decided that is how we live. We will not let you do that. We will fight, if Allah wills it."
MESSAGE ON SCREEN: What is your advice for the Muslims in France?
Coulibaly (Wearing Arabic robe and head-dress): "I am addressing my Muslim brothers, everywhere and in particular in Western countries.
"I ask them 'What are you doing? What are you doing my brothers? What are you doing when they continually insult the Prophet? What are you doing to the aggressors? What do you do when the massacre the entire population?....What are you doing my brothers?'
"Since I got out, I’ve moved around a lot, I’ve visited lots of mosques, in France a little bit and a lot in the Paris region.
"They are all full, full of energy. They are full of sporty youngsters. They are full of men in good health. How do you think with all these thousands and millions of people to defend this?"
The footage ends with a quote from the Koran being sung over footage from the violent end to the supermarket siege.
Lots of spirited passionate "debates" breaking out here in Republique - arguments over religion/schools/parents to blame? Pretty heated.
Fight almost breaks out after man selling flags at 10 Euros is surrounded by angry pensioners calling him a disgrace. Cops calm it down.
"Why?" pic.twitter.com/HkDInvzqoY
— Andy Lines (@andylines) January 11, 2015
Here's some video from Andy Lines of the tension on the streets of Paris already.
We're also hearing Charles De Gaulle airport has been surrounded by armed officers.
We believe this is not in response to any specific terror threat, but a measure of the security surrounding the arrival of world leaders for the rally.
Loud chanting and clapping as thousands and thousands start to congregate in Republique.
Crowd sing passionate rendition of La Marsellaise.
Francois Hollande has been speaking about today's march.
He says: "Today, Paris is the capital of the world."
Hundreds of Tricolore flags being waved. Crowds chanting "freedom" and bursting into Marseillaise #CharlieHebdo pic.twitter.com/E9GEFHZy7K
— Tom Parry (@ParryTom) January 11, 2015 The office of the Paris prosecutor has asked media organisations not to publish Coulibaly's 'martyrdom' video and called for video-sharing websites to take it down.
It is believed the 7-minute clip was originally posted on DailyMotion - a video website founded in Paris but available world-wide.
The DailyMotion page no longer shows the video and displays a broken link but the video is being reposted on YouTube and other sites.
prosecutor's office have asked for the Coulibaly/ISIL video to be taken down #JeSuisCharlie #Paris
— Jacky Rowland (@jackyaljaz) January 11, 2015 Here's a tweet which gives you an idea of how many are expected to attend the rally in Paris today.
Platforms at Metro stops - normally very quiet on a Sunday - are already filling up.
Reports suggest there are thousands in Place de la République in the centre of Paris right now.
This metro stop's usually empty on Sundays. People in #Paris head to the #MarcheRepublicaine #CharlieHebdo pic.twitter.com/dT3S8mr3qf
— Michele Barbero (@MicheleBarbero) January 11, 2015 Public transport to attend the rally today is free.
On social media it has picked up the hashtag #MarcheRepublicaine.
#MarcheRepublicaine today: Métro, bus, RER for free. Green marked section closed for traffic (métro incl!) from 11am. pic.twitter.com/kMr8nxMlhO
— Paris-Tourist.com (@ParisTouristcom) January 11, 2015 A steady stream of people are making their way to the march, as you can see in this Vine from PA's Jo Churcher.
We're expecting a have live video of events from around 2pm.
Prosecutors have confirmed they are linking supermarket siege gunman Amedy Coulibaly to the shooting of a jogger in Paris on the same day as the Charlie Hebdo massacre.
Police reported the shooting on Wednesday in Fontenay aux Roses - a borough in the south of city near to where Coulibaly fatally shot a female police officer on Thursday.
At front of march from Place de la Republique. Crowds now whole length of Rue Voltaire.
Unprecedented in France.
Aerial shots of of the march are starting to be shown on French TV stations.
They reveal the huge number of people already in Place de La Republique, Paris.
This is history #MarcheRepublicaine pic.twitter.com/cwt2scFbWp
— M✏️ (@MarionM_) January 11, 2015 A view here from within the crowd at Place de La Republique via @AurelieLebelle.
It's a clear day in Paris but chilly at only 9 degrees.
A 14h, la place de la République est déjà pleine de Charlie!!! #CharlieHebdo #MarcheRépublicaine pic.twitter.com/vj7KmgLef6
— Aurélie Lebelle (@AurelieLebelle) January 11, 2015 Lots of children here ready to join the march with their parents.
Tens of thousands streaming into Republique as it starts to rain heavily.
I have never seen so many people in my life - even more than the London anti Iraq war march.
Big bursts of spontaneous applause keep breaking out and ripple across this huge square.
Cacophony of noise - rhythmic clapping and chanting.
Chants of "Charlie. Charlie. Charlie. Charlie."
This was French President Francois Hollande greeting Germany's Chancellor Angela Merkel earlier.
It's clearly an emotional time for the French leader who has been warmly embraced by many world leaders.
Here's some more video Mirror reporter Andy Lines has sent back from the Paris rally.
He's in the middle of tens of thousands of people who've turned out for the unity march today.
It's an enormous crowd.
The Élysée palace account has just tweeted this image of world leaders preparing to lead the march.
David Cameron is among them.
The message reads that French president Francoise Hollande is marching with citizens for "democracy, liberty and pluralism".
Le PR @fhollande marche avec tous les citoyen pour la démocratie, la liberté et le pluralisme #MarcheRepublicaine pic.twitter.com/uToPMFJG0x
— Élysée (@Elysee) January 11, 2015 
The world leaders have their arms linked at the front of the march.
Hollande warmly greeted each one with a kiss, although David Cameron opted for a hug instead.
At front of march there is a lively atmosphere, but many people angry politicians are marching separately.
Families of victims from Charlie Hebdo and Jewish supermarket have been here.
Still numb with grief, they behaved with incredible dignity.
Families in apartments on Boulevard Voltaire on balconies holding placards in support.
Some marchers are carrying a symbolic giant pencil in support of Charlie Hebdo.
Security very tight. Platoons of CRS troops and snipers on rooftops.
Ahead of the rally, Mr Hollande declared: "Today, Paris is the capital of the world."
He has been joined by dozens of world leaders standing arm in arm as they lead a defiant march through Paris in the wake of the terror attacks that shocked the French capital.
Prime Minister David Cameron, Mr Hollande and other European leaders broke into spontaneous applause amid cheers, chants of "Charlie, Charlie" and choruses of the French national anthem La Marseillaise as the march got under way from the Place de la Republique.
The streets of Paris are now teeming with people carrying signs condemning the violence of the last week.
In the picture below you can see demonstrators gather in Boulevard Voltaire before the mass unity rally.
In the image below that there are huge crowds at the Place de la Republique.
The humble pencil continues to be used as a symbol of freedom after the Charlie Hebdo killings.
People in the Paris crowds are carrying real ones, giant ones and some have drawn them on themselves to show solidarity with the victims.
In the bottom picture you have a real sense of the scale of the demonstration.
Giant letters attached to a statue in the square spelt out the word Pourquoi?" (Why?) and
small groups sang the "La Marseillaise" national anthem.
Some 2,200 police and soldiers patrolled Paris streets to protect marchers from would-be attackers, with police snipers on rooftops and plain-clothes detectives mingling with the crowd.
City sewers were searched ahead of the vigil and underground train stations around the march route are due to be closed down.
The silent march - which may prove the largest seen in modern times through Paris - reflected shock over the worst militant Islamist assault on a European city in nine years.
Our chief reporter Andy Lines is at the march and is finding slow progress.
Two hours into the event and thousands more people are still arriving to take part.
Andy describes the atmosphere as 'warm' and 'moving' as the French capital makes its feelings about terrorism clear.
After one hour we have just moved forward five yards yaay! Extraordinary warm atmosphere throughout the crowd.
— Andy Lines (@andylines) January 11, 2015 Paris isn't the only European capital that is standing up against terror today.
While not on the same scale, large crowds have begun gathering at Trafalgar Square this afternoon.
Hundreds if not thousands of people have turned out carrying French flags and 'Je Suis Charlie' signs.
French people of all ethnic backgrounds are making their voices heard today.
"We're not going to let a little gang of hoodlums run our lives," said Fanny Appelbaum, 75, who said she lost two sisters and a brother in the Nazi concentration camp at Auschwitz. "Today, we are all one."
Zakaria Moumni, a 34-year-old Franco-Moroccan draped in the French flag, agreed: "I am here to show the terrorists they have not won - it is bringing people together of all religions."
Among many children brought along to the march, Loris Peres, 12, said: "For me this is paying respect to your loved ones, it's like family ... We did a lesson about this at school."
The official estimate on attendance is due to be announced later but anecdotally those in attendance put it around one million.
To put that in context, a 1995 protest against planned welfare cuts brought some 500,000-800,000 people onto the streets of the capital.
A 2002 rally against the far-right National Front's then leader Jean-Marie Le Pen afer he got into the run-off of that year's presidential election drew 400,000-600,000.
Here's another video of the march in Paris.
Huge crowds can be seen filing through the streets.
Half way through the clip you can see a huge pencil being carried above people's heads with the message 'not afraid'.
Daily Mirror chief reporter Andy Lines is tweeting live from the crowd in Paris.
He says there's people 'as far as the eye can see' both in front of him and behind.
Andy adds that there is an 'overwhelming sense of pride and unity' amongst the people there.
have to say it is a pretty upbeat atmosphere. Overwhelming sense of pride and unity of a nation coming together to say no to the terrorists.
— Andy Lines (@andylines) January 11, 2015 The pictures below show how little room there is to move in Paris right now.
Hundreds of thousands of people are filling the city's iconic streets in every direction.
Below you can see Place de la Nation heaving with solidarity marchers.
More from our chief reporter Andy Lines now, with video straight from the scene in Paris.
In the clip Andy stands among the crowds as they make their way through the capital.
In the background you can hear chants of 'Charlie'.
The demonstration, one of the biggest ever staged in Paris, is also meant to symbolize that France fights terror by strengthening its core Republican values of freedom, fraternity and equality.
Gaul's news channels, France24, BFMTV and iTele have been providing non-stop coverage of the streets' demonstrations with interviews from diverse personalities, from counter-terrorism experts and politicians to sociologists, authors and filmmakers.
Over 2000 police agents have been deployed for the occasion. France is still on high terrorist alert.
Hayat Boumeddiene, the suspected accomplice of Amedy Coulibaly, who killed four people at the Kosher supermarket at Porte de Vincennes and a policewoman in Montrouge, is still on the run.
The head of France's 550,000-strong Jewish community, Roger Cukierman, the largest in Europe, said Hollande had promised that Jewish schools and synagogues would have extra protection, by the army if necessary, after the killings.
France's Agence Juive, which tracks Jewish emigration, estimates more than 5,000 Jews left France for Israel in 2014, up from 3,300 in 2013, itself a 73 percent increase on 2012.
Far-right National Front leader Marine Le Pen, whom analysts see receiving a boost in the polls due to the attacks, said her anti-immigrant party had been excluded from the Paris demonstration and would instead take part in regional marches.
As the sun slowly starts to set, the crowds keep coming France.
Below you can see overwhelming numbers at the Place de la Nation and Place de la Republique.
The latter was named after the French republic in 1879.
These moving images show the staff from Charlie Hebdo at the rally.
In the first President Francois Hollande comforts French columnist for Charlie Hebdo Patrick Pelloux as they take part with family members and relatives in the solidarity march.
In the bottom image Luz (second left) looks at Dr Patrice Pelloux.
An organiser of Sunday's march in Paris to honour the victims of the Islamist attacks in France
said the turnout could surpass one million.
"Fantastic France! I am told there could be as many as 1.3 million to 1.5 million of us in Paris," Francois Lamy, the lawmaker charged by the ruling Socialist Party with organising
the rally, tweeted.
There is no official police estimate yet.
A Lille, ensemble, #NousSommesCharlie pic.twitter.com/jMmSYAZdnG
— François Lamy (@lamy_f) January 10, 2015 More from Daily Mirror chief reporter on the ground in Paris now.
Tweeting from amongst the Parisian marchers, he writes: "Red flares have been set off - add to the incredible atmosphere".
Below you can see Andy surrounded by hundreds of marchers.
Prime Minister David Cameron has spoke to reporters about the march from Paris.
He said: "People in France want to come together and show solidarity.
"They are saying as a country we believe in tolerance, free speech.
"We are saying we stand with you the French people at this important time - we share the same values and face the same threat.
"We [in the UK] have spent a lot of time looking at how we would response to these marauding firearms attacks.
"In a free country there is no way to completely guard against an attack.
"But our brilliant intelligence services have foiled a number of plots in recent months."
Cartoons continue to be an effective way of people expressing their refusal to bow down to terrorism.
Below, our chief reporter Andy Lines tweets a sketch drawn by one woman in the Paris crowd today.
The message translates as 'where is the courage?'.
pic.twitter.com/Ilr6tnBNm2
— Andy Lines (@andylines) January 11, 2015 At the front of the march there is a lively atmosphere, but many people are angry politicians are marching separately.
Families of the victims from Charlie Hebdo shootings and the Jewish supermarket siege have been here today.
Still numb with grief, they behaved with incredible dignity.
At front of March from Place de la Republique. Crowds now whole length of Rue Voltaire. Unprecedented in France #CharlieHebdo #France
— Tom Parry (@ParryTom) January 11, 2015 Mr Cameron added: "It was very moving - extraordinary circumstances to be doing it, and an extraordinary set of people to be doing it with.
"The memory I will have is people leaning out of their windows of all ages with tricolours - the French flag - incredibly proud of their country, proud of their democracy, proud of freedom of speech, and these great signs saying `I am Charlie. I am a police officer. I am a Jew'.
"People of all ages wanting to show real solidarity."
Crowds have been carrying effigies as well as banners through the streets of Paris today.
In the second picture you can see cartoon hands holding pencils, simulating a middle finger to terrorists.
The slogan 'mortes de rires' means 'died from laughter'.
The number attending the march in Paris has been described as 'unprecedented'.
The latest estimates are suggesting at least two million attended.
As well as Berlin, London and Paris, there were gatherings in Madrid, Moscow, Beirut, Ramallah, New York, Tokyo, Sydney and Jerusalem.
Landmarks in London were lit up with the colours of the Tricolore in a striking show of unity with France following the terror crisis.
The red, white and blue of the French flag illuminated the National Gallery and the fountain in Trafalgar Square.
The colours were also beamed onto Tower Bridge while the London Eye went dark to allow a similar spectacle at County Hall.
Hundreds gathered in Trafalgar square to honour the victims of the massacre and express defiance against the killers who visited terror and grief on Paris.
As they did after the initial attacks on Wednesday, people held pens and pencils aloft in solidarity with the murdered journalists.
French flags were waved high, and a "wreath" of pens was laid on the ground, a circle filled with flowers, placards reading "Je Suis Charlie" and a single Tricolore flag.
Radical Muslim firebrand Anjem Choudary demanded that those who insult Islam should be sentenced to death.
But he refused to condemn the terrorist attacks in France and warned the continued provocation of Muslims will lead to some people taking the law into their own hands.
Choudary, who remains on police bail after being arrested on terror related charges last year, added the British Government should bring in a law to ban the type of cartoons seen in Charlie Hebdo.
He also defended his friend Mizanur Rahman who claimed that Britain was enemy of Islam in an online rant arguing his comments had been taken out of context.
He said: "The things is, is that he gave a long speech and I think his comments have been taken out of context.
"For peace to prevail, things must change and we can't continue to provoke people, and the blatant provocation of Muslims has led to this [terrorist attack].
"So, I think that this is what he [Rahman] was trying to highlight. People should know these actions have severe consequences."
"In the Quran it states the punishment for insulting the Prophet Mohammed is capital punishment and I believe this should be implemented through an Islamic state through a Sharia court. He [Rahman] believes that too.
"However, there is [sic] people that would take the law into their own hands.
"You can't have a good relationship if Muslims are being provoked and insulted. However, I do believe there can be a good relationship and peace if Muslims are respected."
Deputy Prime Minister Nick Clegg was among the crowds in London, and told Sky News there was a "striking dignity" about people coming together spontaneously to "show their quiet disgust at what happened".
He said: "The attacks in Paris were not just an attack on our physical security but also on the values of freedom of expression which are so important to all European societies and something that we share on either side of the Channel."
He added that mockery, which the terrorists tried to silence, is part and parcel of "living in a free, open and democratic society is about".
"I think what these very dignified demonstrations and processions and marches show today is a steely intolerance against that kind of extremist intolerance.
"And I think that is right - we do need to stand up for our values when they are being so directly attacked as they have been this week."
Thanks very much to the DPM and Mrs Clegg for joining the unity rally at Trafalgar Square #JeSuisCharlie @nick_clegg pic.twitter.com/bKrx9ZVybS
— France in the UK (@FranceintheUK) January 11, 2015 French Ambassador to the UK Sylvie Bermann told Sky News today's events were "very important".
She said: "The message is fight against terrorism, to defend our voices, to defend our freedoms of opinion and expression.
"Everybody wanted to participate and everybody is concerned."
The actress Frances Barber was among the crowd.
She described a silent vigil there as "very moving" and said the rendition of a blue farmyard cockerel that stands on the Fourth Plinth was "oddly fitting".
David Cameron has pledged to introduce "more comprehensive" powers to monitor terror suspects, as he prepared to meet with intelligence and security chiefs to discuss Britain's response to the Charlie Hebdo massacre.
The Prime Minister joined French president Francois Hollande and leaders from around the globe at the million-person unity rally in Paris in memory of the 17 victims of last week's terror attacks.
Mr Cameron said that Britain is facing the same threat as France from what he described as "this fanatical death cult of Islamist extremist violence", adding: "We have to confront it in our own country, keeping our security strong but also taking on this poisonous narrative that is radicalising young minds, wherever we find it".
Our live coverage of the French solitary rally in Paris has now come to an end.
An estimated two million people attended the march through the capital today, to show defiance in face of terrorism.
Young and old, Muslim and Jew, black and white, they came together from across the French capital to reject the murderous demands of the homegrown fanatics who slaughtered 17 innocent people.
At the helm of the procession which snaked for several miles through the streets, were more than 40 leaders showing their solidarity with the victims.
Among them were the Israeli Prime Minister Benjamin Netenyahu and the Palestinian President Mahmoud Abbas.
They linked arms with the French President Francois Hollande. Abbas on his left, Netenyahu on his right.
David Cameron was there too, observing a minute's silence before the rally began and breaking into spontaneous applause with other statesmen as people chanted "Charlie, Charlie" in memory of the Charlie Hebdo magazine cartoonists.
