In Selma, the SNCC campaign was met with violence and intimidation by Clark, who waited at the entrance to the county courthouse, beating and arresting registrants at the slightest provocation. At one point, Clark arrested around 300 students who were holding a silent protest outside the courthouse, force-marching them with cattle prods to a detention center three miles away. At another point he was punched in the jaw and knocked down by a demonstrator, Annie Lee Cooper, whom he was trying to make go home by poking her in the neck with either a nightstick or a cattle prod after she had stood for hours at the courthouse in an attempt to register to vote. By 1965, only 300 of the city's 15,000 potential black voters were registered.