The video seems to suggest she tried to get away, not commit a homicide. Police could have easily let her go. They have a license place, they have a face, they can go pick her up any time later.
This was a SUSPECTED shoplifting. The problem here is that in the USA police have no idea about de-escalation. They always seem to make every situation they get in to worse.
Police needs to arrive into a situation and make it calmer, better. To protect and serve remember? You can’t protect anyone if you just get in waving guns every single time.
This is about shoplifters. You stop them. They don’t let you? Then don’t start shooting, there are other solutions. I recall a few years ago there was a similar situation where US police officers tried shooting a suspected shop lifter in a parking lot ending up shooting and killing a little girl standing being the suspect.
Actions like these are madness and show that police officers in the USA are wholly unprepared to do their jobs. This is not surprising if you realize they received a fraction of the education that police officers get in (for example) Europe. There they do teach de-escalation and it works, people don’t get shot for stealing a bread.