Berkin Elvan was 14 when he was hit on the head by the tear-gas canister in the Istanbul district of Okmeydan. He was one of thousands of people hurt during last year’s protests.
He had been in a coma for 269 days and his health had deteriorated in recent weeks. Doctors said his weight had dropped to 16kg.
After Berkin Elvan’s death was announced, his mother appeared outside Okmeydani hospital and was quickly surrounded by mourners. Tributes appeared on social media and hundreds of people gathered to show their anger.