Ex-cop convicted of manslaughter in Oakland shooting

Johannes Mehserle, who testified that he thought he fired his Taser not the gun that killed Oscar Grant, was convicted by a Los Angeles jury of involuntary manslaughter. Prosecutors and Grant's family had wanted a murder conviction. Mehserle was a Bay Area Rapid Transit officer at the time of the shooting. Officials in Oakland are preparing for possible street violence up there. Mehserle is white, Grant was black and was unarmed and prone when he was shot in the back. The sentence could include an add-on of additional years for using a gun.