...There is significant evidence that cop cams cut down on most civilian complaints. But a close examination of violent encounters with the police caught on tape suggests that even with seemingly incontrovertible video evidence, questions will often linger. The kind of sea change that police reform activists desire will still likely escape them.
"I don't think anything is as good as having a camera," said John Burris, an Oakland civil rights attorney who represented both Rodney King and the family of Oscar Grant, who was killed by an officer in an Oakland train station while he was lying face-down on the ground. But, Burris added, "The realities of the world are police get the benefit of the doubt."