> and publish footage in a way that cannot be censored
Easier said than done. Police officers are often seeing people on the worst day of their life. It would be an incredible decrease in privacy and general dignity if all footage was just published uncensored.
If someone assaulted you and stole your cloths would you want a video online of you being interviewed about the experience with just a towel on (and probably a few scenes where you are completely naked before they get you the towel)? That is potentially an extreme example, but ever day police officers interact with innocent people and victims that don't deserve to have that experience made public domain.
In short, the police need some way to make sure some video is kept private.
Police abuse of power is a terrible thing. I have no doubt they are literally getting away with murder and framing people in many cases. But we have to remember that a vast majority of what officers do is to protect us and help us in our time of need.