A protestor wearing a gas mask holds a tear gas canister during clashes with riot police, as part of a demonstration after the funeral of a protester killed in a recent protest, on May 23, 2014, in the Okmeydani district of Istanbul. Turkish riot police fired tear gas and water cannon at crowds today after a second person died from anti-government protests that have turned into running battles on the streets of Istanbul. Riot police clad in heavy body armour swung clubs and fired guns into the air as rioters blocked roads and burned tyres, according to an AFP photographer on the scene. AFP PHOTO / BULENT KILIC        (Photo credit should read BULENT KILIC/AFP/Getty Images)