Protesters are angry over the eviction of overwhelmingly peaceful activists at Gezi Park, next to Taksim Square, who oppose government plans to rip down its trees and erect a replica Ottoman-era barracks. But the protests quickly spiraled into a widespread denunciation of what many say is Erdogan's increasingly authoritarian way of governing charges he vehemently denies.
Speaking to his supporters, Erdogan recalled telling Interior Ministry officials: "You are going to clear Gezi Park. We have reached an end. We cannot stand it anymore.' And as you know, yesterday the operation was carried out, and it was cleared."
"I did my duty as prime minister," he said, "Otherwise there would be no point in my being in office."
Police in uniform and plain clothes sealed off Taksim Square and Gezi Park, which riot police cleared of thousands of peaceful protesters in a swift but muscular operation Saturday evening. Crews worked through the night to remove all traces of a sit-in that started more than two weeks ago and became the focus of the strongest challenge to Prime Minister Recep Tayyip Erdogan in his 10 years in office.
Istanbul's governor, Huseyin Avni Mutlu, said the square was off-limits to the public for the time being, and nobody would be allowed to gather. A spokesman for the protesters vowed the group would retake Gezi Park.
"We will win Taksim Square again and we will win Taksim Gezi Park again," Alican Elagoz said.
Thousands of protesters trying to reach the area were stuck on side streets and in nearby neighborhoods in a blanket of tear gas. Stumbling to avoid the gas, they piled into nearby cafes and restaurants, where waiters clutched napkins to their faces.
Stone-throwing youths and riot police clashed in Istanbul's Sisli neighborhood next to the Taksim area. Television footage showed police deploying two water cannon trucks against the youths, standing near a flaming barricade blocking the street. Rocks littered the roadway.
The protests in Istanbul began as an environmental sit-in to prevent a development project at Gezi Park, but anger over a violent crackdown there on May 31 quickly spread to dozens of cities and spiraled into a broader expression of discontent.
The protests have left at least five people dead, including a police officer, according to a Turkish rights group, and more than 5,000 injured.