Plain clothes police walk on the main pedestrian street of Istiklal in central Istanbul during a May Day demonstration in Istanbul May 1, 2014. Turkish police fired tear gas, water cannon and rubber ... more 
Plain clothes police walk on the main pedestrian street of Istiklal in central Istanbul during a May Day demonstration in Istanbul May 1, 2014. Turkish police fired tear gas, water cannon and rubber pellets on Thursday to try to stop thousands of people, some armed with fire bombs and fireworks, from defying a ban on May Day rallies and reaching Istanbul's central Taksim square. REUTERS/Umit Bektas (TURKEY - Tags: POLITICS CIVIL UNREST) less 
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Reuters | Photo By UMIT BEKTAS / REUTERS
Thu, May 1, 2014 9:36 AM EDT