Do you mean hypothetically could society hold law enforcement personnel accountable for mistakes, bad judgement, flagrant criminal conduct, horrendous abuse of any and everyone? Certainly, a large scale and comprehensive restructuring of America’s law enforcement and prosecutorial system is legally possible.

However, I hold to the opinion that if you are discussing actual reality, based on decades (if not the entire period post civil war, for near certainty) of historical examples and the current “majority” position of the US electorate: there is a nearly unqualified NO. We cannot, or will not, hold law enforcement accountable for even intentional, planned, and malicious conduct in a vast majority of cases. There is practically no accountability at all, and that’s just for thoroughly proven intentional conduct. Bad judgement, alleged mistakes, etc are even less able to result in any action.

The reality of the legislation and precedent ensure it. It’s not a bug, it’s a feature.