Also, if the body camera isn't (1) robust enough to withstand an attack; and/or (2) streaming or at least storing the footage quickly enough to capture evidence of an attack, then whoever designed the body camera system has done an unbelievably awful job.

Whooa, not all cops are predators, just a small minority. I think you’re forgetting what lawlessness means and what these cops do. Some arest dangerous people, murderers and such. Some plant cocaine evidence and some are power tripping. They are people like everybody else and if they get no privacy at all maybe they wouldnt want to enroll to be cops. How about we devs were constantly monitored becaus some dev stole some credentials to some database. But, why, we have nothing to hide, why not be filmed all the time and when you go to the toilet the video gets encrypted and only a judge can see that.. see where its going?

There must be a middle ground. You see, this cop fucked up, that guy did a hit and run and now will probably will go free. Double fuck up imo

This. Store the private key in a sealed envelope somewhere where only a judge can get it. If they push the privacy button and the timeframe is shown to be relevant to a case, it gets decrypted.

I really like how you think.

It could be a good example of public/private key encryption too. You can encrypt with a public key (or more commonly, symmetrically encrypt with a symmetric key asymmetrically encrypted with a public key), with the private decryption key only in the hands of a judge (or other supervisor).

Isn't there Internal Affairs? Though the problem is the incentive is not there. Budget problems prevent hiring only good candidates, and similarly the courts don't think cities should be paying a lot after these bad apples.