I think the way to look at this is to separate why Black behavior tends to be what it is from why police behavior is what it is. Though the "why" needs fixed, what is going on with police/minority interaction needs to be discussed.
I grew up in a law enforcement family.
My take is independent of "black" behavior.
I'll begin by looking at NCAA sports. We know it's broken. Yet little is done about the corruption (except the blue bloods did take a hit this year as they are trying to recover from the shoe scandal. We would be naive to think that law enforcement is without corruption.
The system needs to be fixed. Yes, there are "bad" cops. However, the system is a major part of the problem. Training is poor. Politicians do influence police actions. That needs to be highly vetted out. There is a warrior mentality in law enforcement. There is a godlike mentality to police decisions. Think of people you know at work who don't get called out for bad behavior. Behavior gets worse.
I don't know about the Lady Taser cop except that what she did was terrible. I know enough cops that someone should NEVER have mistaken a gun for a taser.
She either committed murder or something really impaired her judgment. PTSD is rampant in law enforcement. Officers with PTSD are often given a pass. We have a local lady cop who admittedly has ptsd. She should not be allowed to be on the streets, but she is. When you interact with her she seems to look for an excuse to blow someone's head off. My guess is she has PTSD, which clouded her thoughts which could range from a bad choice under stress or a form of murder.
We had a shootout between a militia guy and the local police. There were harassing him. The officer who was hit had ptsd and made the decision to leave law enformcement. The lady wasn't hit. Where her ptsd comes from that or earlier, who knows. In that shootout a State Trooper was trying to get to the shooting from 40 miles away. In a city of 100k, he was driving w/o lights and siren at 100+ miles per hour and broadsided a 28 yo mother of 2 in a minivan who had some pot chemicals in her blood. The state police immediately made a deal out of her pot consumption. He was found guilty of being wreckless and got probation. He retired from injuries, but he wasn't going to get his job back. We need to hold police accountable and that means governments and law enforcement leaders regardless of "black" behavior.
Bad cops exist. However, the system is broken. Airline pilots after an accident are heavily evaluated for PTSD impact and some lose their license regardless of wrong doing. If they aren't fit to fly they aren't fit to fly. We need to do a deeper dive into police ptsd, corruption, and of course training. The system is problematic.
We should be able to fix police issues quicker than we can racial/cultural issues which are independent.