Turkish riot policemen use tear gas to disperse demonstrators during clashes on May 31, 2013 at a protest against the demolition of Taksim Gezi Park, in Taksim Square in Istanbul. Ozan Kose / AFP
A demonstrator wears a Guy Fawkes mask during a protest against the demolition of Taksim Gezi Park on May 31, 2013, in Taksim quarter of Istanbul. Police reportedly used tear gas on early May 31 to disperse a group, who were standing guard in Gezi Parki to prevent the Istanbul metropolitan municipality from demolishing the last remaining green public space in the center of Istanbul as a part of a major renewal project of Taksim. AFP PHOTO/BULENT KILIC
Protestors clash with Turkish riot policemen during a protest against the demolition of Taksim Gezi Park on May 31, 2013, at Taksim in Istanbul. Bulent Kilic / AFP
Protestors clash with Turkish riot policemen during a protest against the demolition of Taksim Gezi Park on May 31, 2013, in Taksim quarter of Istanbul. Bulent Kilic / AFP
A wounded man sits on Taksim Square during clashes with riot police . Ozan Kose / AFP
A wounded protestor is carried away during confrontations with riot police. Bulent Kilic/ AFP
A Turkish protestor wearing a gas mask runs from a tear gas canister . Bulent Kilic / AFP
A Turkish protestor holds a placard that reads "Chemical Tayyip" during clashes with riot police. Bulent Kilic / AFP
Turkish riot policemen use tear gas to disperse demonstrators during clashes on May 31, 2013 at a protest against the demolition of Taksim Gezi Park, in Taksim Square in Istanbul. Ozan Kose / AFP
A demonstrator wears a Guy Fawkes mask during a protest against the demolition of Taksim Gezi Park on May 31, 2013, in Taksim quarter of Istanbul. Police reportedly used tear gas on early May 31 to disperse a group, who were standing guard in Gezi Parki to prevent the Istanbul metropolitan municipality from demolishing the last remaining green public space in the center of Istanbul as a part of a major renewal project of Taksim. AFP PHOTO/BULENT KILIC
Protestors clash with Turkish riot policemen during a protest against the demolition of Taksim Gezi Park on May 31, 2013, at Taksim in Istanbul. Bulent Kilic / AFP
Protestors clash with Turkish riot policemen during a protest against the demolition of Taksim Gezi Park on May 31, 2013, in Taksim quarter of Istanbul. Bulent Kilic / AFP
A wounded man sits on Taksim Square during clashes with riot police . Ozan Kose / AFP
A wounded protestor is carried away during confrontations with riot police. Bulent Kilic/ AFP
A Turkish protestor wearing a gas mask runs from a tear gas canister . Bulent Kilic / AFP
A Turkish protestor holds a placard that reads "Chemical Tayyip" during clashes with riot police. Bulent Kilic / AFP
Turkish riot policemen use tear gas to disperse demonstrators during clashes on May 31, 2013 at a protest against the demolition of Taksim Gezi Park, in Taksim Square in Istanbul. Ozan Kose / AFP