Watch this: http://www.thechamplainchannel.com/video/5076676/detail.html (Keep your eye above the horse's butt or you'll miss the action. Stick around for the assault on the media.)
Read this: http://news.yahoo.com/s/ap/20051009/ap_on_re_us/new_orleans_taped_beating
And this: http://news.yahoo.com/s/ap/20051011/ap_on_re_us/new_orleans_taped_beating
The man says he hasn't drank in 25 years, the police say he was intoxicated and resisting. In either case, a 64-year-old man being restrained by three officers does not need to be punched in the head to be subdued. Then the cops tried to suppress the media, and assaulted one member when they refused to stop recording.
When you're a cop, your accountability is higher than an average citizen. If you're honest, you shouldn't have a problem being recorded every second you're on duty.