Hundreds of Turkish riot-clad police have entered Istanbul's Taksim Square on Tuesday, firing tear gas at a small number of anti-government protesters.
Turkish Police Enter Taksim Square

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A protester throws a petrol bomb towards a crowd control vehicle in Taksim Square in Istanbul, June 11, 2013.

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A crowd control vehicle fires a water cannon against protesters in Taksim Square in Istanbul, June 11, 2013.

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A protester throws a bottle at riot police in Taksim Square in Istanbul, June 11, 2013.

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A Turkish riot police officer pushes a photographer during a protest in Taksim Square in Istanbul, June 11, 2013.