PARIS, FRANCE - JANUARY 07:  An estimated 5,000 people gather at Place de la Republique (Republic square) in support of the victims after 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 Aurelien Meunier/Getty Images)