Tens of thousands rallied in Turkey on Sunday in the largest anti-government protests since unrest broke out two weeks ago. The movement began as an effort to block the razing of a public park but has since grown into challenging Turkish Prime Minister Tayyip Erdogan for what opponents call excessively religious and authoritarian tendencies. The largest crowd Sunday filled Istanbul’s Taksim Square, with thousands more in Ankara and the western city of Izmir. Police dispersed the Ankara protest with tear gas and water cannons. Erdogan meanwhile addressed a counter-rally of thousands of supporters upon his return from a foreign trip. Erdogan said his patience is wearing thin with the opposition protests and called for more pro-government rallies next weekend.