It's two sided -- officers behave better because they're on camera, and people make up fewer false accusations because they know they were on camera. My city (

It's two sided -- officers behave better because they're on camera, and people make up fewer false accusations because they know they were on camera. My city (Denver) passed a law mandating body cameras for police during the last election. It'll probably be a year or two before we get data on how well it's worked.