In this May 21, 2016 photo, masked protesters attack a police water canon in front of a burning pharmacy near Congress where President Michelle Bachelet was presenting the state-of-the-nation report, in Valparaiso, Chile. The anti-government protest began as a peaceful march but turned rough as some demonstrators threw rocks at police and gasoline bombs at buildings, resulting in the death of one man who reportedly died of asphyxiation. (AP Photo/Esteban Felix)