So the cops should have arrested her. Instead they failed to control her and allowed the situation to escalate. Then they used deadly force without cause.
It appeared the first officer to deal with her did attempt to arrest her but he was not aggressive enough to get it done, I understand why and it all has to do with PC. He was not only dealing with a female but a black female and knew his every action would be under a microscope. So he tried to be “gentle” with her and she got away from him. If he had just grabbed her and cuffed her like he would have if she had been a white male the story would have ended there, unless people would have been up in arms that he was too forceful.
Yes LEOs screw up and yes some are totally out of line, but others are good professionals that have a hard time doing their job due to PC crap.