Police in riot gear began closing in early on Monday on some 2,000 anti-Wall Street activists who defied a midnight deadline to vacate an eight-week-old encampment outside Los Angeles City Hall as some protesters blocked traffic. Mayor Antonio Villaraigosa had given Occupy LA protesters until midnight local time to dismantle their tents, pack up their belongings and clear out, or face a forcible removal. But Jim Lafferty, a National Lawyers Guild attorney and leading advocate for protesters in talks with the city, said two hours after the eviction deadline that police had assured him “there will be no move against this occupation tonight.” He said he expected police would end up giving Occupy LA a two-day reprieve and that only demonstrators risking arrest before then were those who remained in the roadway. A police commander on the scene, Andrew Smith, confirmed the encampment would be allowed to stay. But he said protesters who continued to block traffic had until 4:30 a.m. to move or face arrest. . Clark Davis, an Occupy LA organizer, said to Smith and a group of officers standing by, “You guys have been fantastic.” But some protesters expressed suspicion at word of a reprieve, saying it could be a ploy by police to get them to let down their guard.