We want the police to reform. But what exactly are we asking for?

The fundamental problem for me is that we are asking the police to do 5 different things:

1) Punish criminal (run jail)

2) Solve crimes and provide evidence

3) Enforce Laws

4) Prevent Crime

5) Maintain public safety

But these five things are at odds with each other. So the police end up using the tools of others to fulfill the goals of one (and that one is definitely not 4 or 5).

Also a simple but difficult structural way to keep police accountable. Put pressure on who they elect for their union heads, limit their scope, and establish a separate police for the police.