Police in riot gear clashed with anti-Wall Street protesters overnight, firing tear gas and beanbag rounds at hundreds of demonstrators in Oakland and forcibly evicting and arresting more than 50 others in Atlanta. Overnight, the scenes in Oakland were chaotic, with officers firing tear gas and beanbag rounds over three hours as protesters tried to re-establish a tent camp outside city hall that they had been evicted from earlier Tuesday. Despite many eyewitness accounts, Police denied reports that they used flash bang canisters to help break up the crowds, saying the loud noises came from large firecrackers thrown at police by protesters. The chemical haze from the tear gas hung in the air for hours, new blasts clouding the air before the previous fog could dissipate. Police estimated that there were roughly 1,000 demonstrators at the first clash. Nearly 100 people were arrested. Among the protesters were young adults, some riding bicycles, protecting themselves from the noxious fumes with bandanas and scarves wrapped around their faces. Protesters were still resolved to continue. "This movement is more than just the people versus the police," Mario Fernandez said. "It's about the people trying to have their rights to basic services." He added, "This crowd isn't going anywhere anytime soon." In Atlanta, helicopters hovered and trained spotlights on the city's downtown as police in riot gear moved into a small city park just after midnight and arrested protesters who had been there in tents for about two weeks. Before police marched in, protesters were warned a couple times around midnight to vacate the park or risk arrest. Inside the park, the warnings were drowned out by drumbeats and chants of "Our park!" Organizers had instructed participants to be peaceful if arrests came, and most were. Many gathered in the center of the park, locking arms, and sang "We Shall Overcome," until police led them out, one-by-one to waiting buses. Some were dragged out while others left on foot, handcuffed with plastic ties. The police presence was "overkill," said state Sen. Vincent Fort, who was among those arrested after coming to the park in support of the protesters. He called the camp "the most peaceful place in Georgia." "At the urging of the business community, he's moving people out," he said, referring to Mayor Kasim Reed. "Shame on him." Police included SWAT teams in riot gear, dozens of officers on motorcycles and several on horseback. By about 1:30 a.m. Wednesday the park was mostly cleared of protesters. Protesters vowed to congregate in another park a few hours later.