What would it take to align police incentives (compensation, etc) with the outcomes we want? Reforming the unions? Better local politicians?
De-militarizing the police seems like a great step, but it seems like trying to cut off a mindset that is already entrenched.
De-criminalize recreational drug-use. Community arrests of recreational users with no victims causes a bad image and puts young people on a path to being full time criminals.
Increase training. If you fall back to instinct too quickly and you're equipped with guns, you're likely to commit large mistakes like murder.
No immunity. Police offers already defend each other. Immunity makes just gives them a license to kill. Over time, they'll learn they can get away with pushing people around and hurting them under umbrella immunity + team protection. Legal immunity must stop.
Full medical insurance, no co-pay (Do all officers have this already?). If an officer has to fear he'll get ruined from an injury then it creates unnecessary pressure for him to shoot first.