Protestors clash with police during a rally marking the first anniversary of Berkin Elvan's death in Istanbul, Turkey, 11 March 2015. Berkin Elvan, 15 years old, died on 11 March 2014 after 296 days in a coma in consequence to the injuries suffered when he was hit by a gas canister during the police crackdown on protesters at Gezi Park in June 2013. (Photo by Ulas Yunus Tosun/EPA)
