In order to protect the public, law enforcement officers and municipalities. I think all uniformed law enforcement officers should wear video/audio equipment while on duty. There should be separation between the law enforcement agency and where the video/audio files are stored and or maintained. The link below of a recent news report is a perfect example of why this is needed.
http://abclocal.go.com/wabc/html5/video?id=9440993&pid=9440401§ion