Photo: Mayor Kevin Johnson has mentioned K Street and Regional Transit stations as possible locations for new surveillance cameras. The Sacramento Police Department and Mayor Kevin Johnson’s office anticipated a battle with the local branch of the American Civil Liberties Union over the city's plans to buy 32 surveillance cameras, e-mails show. The debate between the Sacramento County chapter of the ACLU and the Sacramento Police Department over the effectiveness of surveillance cameras is revealed in documents obtained by The Sacramento Press. The ACLU argues that surveillance cameras do not cut crime. Norm Leong, spokesman for the police department, said that security cameras already