Many, myself included, would argue that they're basically out of control right now. Just look at the sequence of events that unfolds almost to the letter after every unjustified police killing. At best the outcome is the cop involved resigns and quietly goes to work for another police department a few months down the line or retires with full benefits.
Defund of course means a million things to a million people but a lot of what I'm hearing is about moving the armed police response to the minority of roles where it's needed. The amount of time you need an armed officer is a tiny fraction of the times they're there and they're not trained for the vast majority of the actual work they do. Under this defund is about taking the glut of resources allocated to cops and moving it to people better trained to deal with the kind of mental health, mediation, etc tasks that take up the bulk of police's actual time.
I would say, though, that our US police are more controlled than what's going on in the CHAZ, however slightly in some ways.