Riot police fire a water cannon at an anti-government protester at Taksim square in central Istanbul June 16, 2013. Thousands of people took to the streets of Istanbul overnight on Sunday, erecting barricades and starting bonfires, after riot police firing teargas and water cannon stormed a park at the center of two weeks of anti-government unrest. Lines of police backed by armoured vehicles sealed off Taksim Square in the center of the city as officers raided the adjoining Gezi Park late on Saturday, where protesters had been camped in a ramshackle settlement of tents.[Photo/Agencies]