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A woman wera pencisl in her hair as she takes part in a unity rally (Marche Republicaine) on January 11, 2015 on the old harbour in Marseille, southern France, 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 hostage-taking of a Jewish supermarket on the eastern fringes of the capital, which killed four people. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP via Getty Images)