The officer in question has been fired, arrested, and charged. That would seem to contradict the "never held accountable".
Some police acts enrage me, for sure. Really. At the same time, the rioter behavior we've seen in the last three days might be worse than the sum total of all of that. And I know that the police have to deal with this shit day in and day out. It's an impossible job, and yet we cannot survive without them.
Maybe someday we can have AI robot policemen instead, programmed to very careful protocols. I'm cautiously optimistic.
I agree with you completely that the rioter behaviour is appalling. I feel like I have seen just as bad as the things on this site from rioters and it deeply saddens me. I am confident however that those rioters that do stoop to the ultimate lows including attacking store owners will be punished to the full extent of the law.