A riot policeman fires tear gas during an anti-government protest in Istanbul early June 16, 2013. Turkish riot police stormed an Istanbul park at the heart of two weeks of protest against Prime Minister Tayyip Erdogan on Saturday, firing tear gas and water cannon and sending hundreds scurrying into surrounding streets. Lines of police backed by armoured vehicles sealed off Taksim Square in the center of the city as officers stormed the adjoining Gezi Park, where protesters had been living in a ramshackle tent camp.[Photo/Agencies]