Try viewing this from the police officer's point of view.

He was protecting the people inside and himself. She was coming through a window that had been smashed with the intention of letting a mob of people in where they did not belong. He was trapped, she could have turned around and went the other way.

Totally justified.

https://www.nbcnews.com/news/us-news/officer-who-shot-ashli-babbitt-during-capitol-riot-breaks-silence-n1277736