PARIS, FRANCE - JANUARY 08: A man holds a placard on top of the monument during a vigil for victims of yesterday's terrorist attack, at the Place de la Republique (Republic Square) on January 8, 2015 in Paris, France. Twelve people were killed yesterday including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Dan Kitwood/Getty Images)
