Protester takes aim at riot police with a slingshot during a May Day demonstration in Istanbul, May 1, 2014.

Protester takes aim at riot police with a slingshot during a May Day demonstration in Istanbul, May 1, 2014. Credit: Reuters

Fireworks explode near protesters during a May Day demonstration in Istanbul, May 1, 2014.

Fireworks explode near protesters during a May Day demonstration in Istanbul, May 1, 2014. Credit: Reuters

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