TOPSHOTS A protester holds a plank to hide from a police water cannon on March 11, 2015 in Istanbul, during clashes following a protest in memory of a teenager killed in 2013 anti-government demonstrations and whose death has become a rallying cause for opponents of the Turkish president. The protesters were marking the first anniversary of the death of Berkin Elvan who died on March 11, 2014, after spending 269 days in a coma due to injuries sustained when he was hit by a tear gas canister fired by police in the mass protests of early summer 2013. AFP PHOTO / OZAN KOSE