Tribute To Victims Killed During Attack At Satirical Magazine Charlie Hebdo At Place De LA Republique In Paris [Getty Images]

PARIS, FRANCE - JANUARY 07: People hold signs saying 'Je suis Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)

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