It was a set up. Any other time he’d have the helmet on. Besides, it had a plexiglass face shield, it wasn’t a bike helmet. And notice when the film starts, he’s making the plan with his antifa buddies and then starts toward the police line which is already moving. Most rioters/protestors don’t touch the police, they stand inches away and taunt. This guy went straight up to them and initiated physical contact forcing them to react. He knew what he was doing and he sacrificed himself for his religion.
...and he was waving his phone inches from the police electronic communications gear....