Percy Green, caught with a can of spray paint and a stencil in his hands, was charged with property damage in connection with the defacing of buildings at St. Louis University, authorities said Tuesday. Green, 43, of the 4100 block of North Newstead Avenue, leader of a civil rights group called Action, was charged with third-degree property damage in warrants issued Tuesday by the circuit attorney's office. He was released on $500 bond.