People hold a banner reading "Charlie Hebdo" as they gather at Place de la Bastille during the Unity rally "Marche Republicaine" on January 11, 2015 in Paris in tribute to the 17 victims of a three-day killing spree by homegrown Islamists. The killings began on January 7 with an assault on the Charlie Hebdo satirical magazine in Paris that saw two brothers massacre 12 people including some of the country's best-known cartoonists, the killing of a policewoman and the storming of a Jewish supermarket on the eastern fringes of the capital which killed 4 local residents.    AFP PHOTO/ JOEL SAGET        (Photo credit should read JOEL SAGET/AFP/Getty Images)