French President Francois Hollande declares Thursday 8 January 2015 a national day of mourning after the bloody attack that targeted "Charlie Hebdo" newspaper headquarters in Paris by gunmen, resulting in 12 killed persons

French President Francois Hollande declares Thursday 8 January 2015 a national day of mourning after the bloody attack that targeted "Charlie Hebdo" newspaper headquarters in Paris by gunmen, resulting in 12 killed persons, including four of the most prominent cartoonists in the newspaper, on top of them the publisher of the magazine "Stephane Charbonnier". The background of this was publishing satirical caricature about the organization of the Islamic state and addressing the Islamic religion