I thought that was Lynn from Cold Steel at first
But notice the police are acting as a barricade and herding the morons to stay in the fight ring. Police did this crap in Charlottesville also. Corral the "protesters," block escape, and don't intervene except to herd them back to the fight.
You'd think they'd be trying to ban showers instead.
In the video I posted the one group could leave either by walking through "antifa" or through the wall of police, who kept pushing them back inside the yellow tape toward the fight.