Anatomy of a Potential Agent Provocateur
You'll see the entrance of the potential AP from behind the police line; he was not with the group at any time. Next he fires up a largely peaceful crowd, which then breaks past the police, who largely give up. Then you'll see the potential AP lead the charge breaking the windows out of the door where Ashli Babbitt is shot. He then slips away in the confusion.
Full video: https://www.youtube.com/watch?v=PfiS8MsfSF4