Protests held in Pittsburgh after cop cleared in shooting

PITTSBURGH (AP) — The father of a slain black teenager pleaded for peace Saturday after the acquittal of a police officer triggered an apparent retaliatory shooting at the defense attorney's office and touched off protests in the streets of Pittsburgh.Police put officers on 12-hour shifts until further notice.The verdict late Friday in the deadly shooting of 17-year-old Antwon Rose II angered his family and civic leaders and prompted hundreds of people to gather Saturday afternoon at an in