Erdem Gunduz, centre, stands s...

Erdem Gunduz, centre, stands silently on Taksim Square in Istanbul, Turkey, early Tuesday, June 18, 2013. After weeks of confrontation with police, sometimes violent, Turkish protesters are using a new form of resistance: standing silently. The development started late Monday when a solitary man began standing in passive defiance against Prime Minister Recep Tayyip Erdogan's authority at Istanbul's central Taksim Square. The square has been sealed off from mass protests since police cleared it over the weekend. The man has identified himself as Erdem Gunduz, a performance artist. His act has sparked imitation by others in Istanbul and other cities. It has provoked widespread comment on social media. (AP Photo/Petr David Josek)