I have another angle for this, which is we have to clearly identify a path where legitimate policing can occur, but aims to end police misconduct systematically.
The officer charged with murdering George Floyd has been charged with police brutality 12 times, and let off with "no discipline" every time [0].
If officers who used excessive force aren't punished, they are taught that their actions were acceptable. I'd like to see calls for punishment in the case of Derek Chauvin, as well as for any use of excessive violence. I think convicting Derek Chauvin for murder would set a new standard for police conduct that could prevent similar acts of excessive violence from happening in the future.
[0] https://www.reddit.com/r/LPOTL/comments/gsespz/derek_chauvin...