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From left : European Commission President Jean-Claude Juncker, Israeli Prime Minister Benjamin Netanyahu, Malian President Ibrahim Boubacar Keita, French President Francois Hollande, German Chancellor Angela Merkel, along with other officials and heads of states take part in a Unity rally "Marche Republicaine" on January 11, 2015 in Paris in tribute to the 17 victims of the three-day killing spree. 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 and the storming of a Kosher supermarket on the eastern fringes of the capital which killed 4 local residents. AFP PHOTO / ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP via Getty Images)