40 Shades of Martial law in Turkey May day

Turkish policemen sit on the ground as they secure a street leading to Taksim Square in Istanbul on May 1, 2014 as part of May Day security measures. Turkish police used water canon and tear gas to disperse thousands of protesters who tried to defy a Labour Day ban on demonstrations on Istanbul's Taksim Square, the scene of protests that have dogged the government for months.