Police Swoop on Beijing University 2009-04-22 Comments by a Beijing professor enrage petitioners, who descend on his office and prompt a police crackdown. Police in Beijing move in on petitioners in the capital in several locations during a sensitive anniversary year. HONG KONG—Authorities in Beijing have begun moving to clear large numbers of people from the capital who have a grievance against the government as security tightens, with local residents and petitioners reporting detentions in several sensitive locations. Hundreds of protesters have traveled from all over China to the capital's prestigious Beijing University following recently reported remarks about petitioners by...