A couple kiss during the unity rally “Marche Republicaine” on Jan. 11 in Paris in tribute to the 17 victims of a three-day terrorist killing spree. (Martin Bureau/AFPGetty Images)
The crowd gathers during a march in Paris, France, on Jan. 11 in a massive show of unity and defiance in the face of terrorism that killed 17 people in France’s bleakest moment in half a century. (Laurent Cipriani/AP)
People gather Jan. 11 at the Place de la Nation, the final destination of a march to honor the victims of the terrorist attacks Jan. 11. (Etienne Laurent/EPA)
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People climb on the monument on Place de la Bastille as millions of people march against terrorism in Paris on Jan. 11. (Ian Langsdon/EPA)
Thousands gather Jan. 11 at the Place de la Nation in Paris, the finishing point of a march to honor the victims of the terrorist attacks. (Etienne Laurent/EPA)
A man shouts during a demonstration in Paris, France, on Jan. 11. (Peter Dejong/AP)
Demonstrators hold a giant pencil-shaped sign reading “Not afraid” as they gather at Place de la Nation during the unity in Paris on Jan. 11. (Joel Saget/AFP/Getty Images)
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Demonstrators make their way along Place de la Republique in Paris on Jan. 11 during a mass unity rally in response to last week’s terrorist attacks. (Dan Kitwood/Getty Images)
After Sunday’s unity rally in Paris, the tributes outside the offices of Charlie Hebdo have become a carpet of flowers, placards and candles in Paris, France. (Christopher Furlong/Getty Images)
Marchers take part in a Unity rally Jan. 11 in the French northern Atlantic island of Saint-Pierre-et-Miquelon in tribute to the 17 victims of the three-day terrorist killing spree in France last week. (Jean-Christophe Lespagnol/AFPGetty Images)
People are seen at the Place de la Nation in Paris on Jan. 11 as they attend a mass unity rally following the recent terrorist attacks. (Pascal Le Segretain/Getty Images)
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People gather around the monument on Place de la Nation as millions of people march against terrorism in Paris on Jan. 11. (Ian Langsdon/EPA)
Demonstrators make their way along Boulevard Voltaire on Jan. 11. during a unity rally in Paris after the recent terrorist attacks. (Christopher Furlong/Getty Images)
People gather at the Place de la Nation on Jan. 11 where hot air ballons have been released at the end of a march to honor the victims of the terrorist attacks. (Etienne Laurent/EPA)
A woman lights a candle on Republique square during a rally in Paris on Jan. 11. (Peter Dejong/AP)
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A woman takes part in a rally Jan. 11 in Ajaccio, France, in tribute of the 17 victims of the three-day terrorist killing spree. (Pascal Pochard-Casabianca/AFPGetty Images)
People take part in a rally Jan. 11 in Lyon, France, in tribute to the 17 victims of the three-day terrorist killing spree. (Jeff Pachoud/AFPGetty Images)
A man holds a placard reading “Je suis Charlie” (I am Charlie) during a rally Jan. 11 in Paris. (Loic Venance/AFPGetty Images)
A giant Marianne, the national symbol of France, arrives Jan. 11 at the Place de la Nation in Paris at the end of a march to honor the victims of the terrorist attacks. (Etienne Laurent/EPA)
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French President Francois Hollande, center, is surrounded by head of states Benyamin Netanyahu, from left, of Israel, Ibrahim Boubakar Keita of Mali, Angela Merkel of Germany, EU Coucil President Donald Tusk and Palestinian Mahmud Abbas as they attend the solidarity march in Paris on Jan. 11. (Philippe Wojazer/AFPGetty Images)
The Charlie Hebdo newspaper staff, with cartoonist Renald Luzier, known as Luz, third from left with mustache, march with relatives, right, of the Jewish victim of the kosher supermarket, Michel Saada, in Paris, France, on Jan. 11. (Francois Mori/AP)
People gather for the Unity rally Jan. 11 in Paris to honor the 17 victims of a three-day terrorist killing spree. (Martin Bureau/AFPGetty Images)
The French flag is seen as people take part in a rally Jan. 11. in Paris to honor the 17 victims of the three-day terrorist killing spree last week. (Martin Bureau/AFPGetty Images)
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An aerial view taken Jan. 11 shows people attending the rally in Paris in tribute to the 17 victims of the three-day terrorist killing spree last week. (Kenzo Tribouillard/AFPGetty Images)
A demonstrator holds up an oversized pencil at Republique Square in Paris before the start of a rally Jan. 11. (Laurent Cipriani/AP)
French President Francois Hollande, right, welcomes British Prime Minister David Cameron at the Elysee Palace before they participate in a march to honor the victims of the terrorist attacks in Paris on Jan. 11. (Yoan Valat/EPA)
A man holds a cardboard sign reading “Hommage to the Victims-Heros” as people gather on Republic Square in Paris before the start of a rally Jan. 11. (Bertrand Guay/AFPGetty Images)
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People wave cardboard signs reading “I am a Kurd, I am Charlie” as they gather in Paris before the start of a rally Jan. 11. (Bertrand Guay/AFPGetty Images)
People gather on Republic Square in Paris before the start of a Unity rally Jan. 11 in tribute to the 17 victims of a three-day terrorist killing spree. (Bertrand Guay/AFPGetty Images)
People leave notes and candles as they gather in Republic Square in Paris before the start of a rally Jan. 11. (Bertrand Guay/AFPGetty Images)
A man holds a sign in French that reads, “Je Suis Charlie” (I am Charlie) at the start of rally Jan. 11. (Martin Bureau/AFPGetty Images)