Well, it looks like you can pull it up over your face. He just has it pulled down.
Edit: I'm not even defending mask laws. I don't see how they could possibly be constitutional and disagree with them fundamentally. I just think this guy was clearly wearing something that covers his face. It's a mask that he uses to cover his face.
Dude, who are the ones actually shooting at people? You so worried about what might happen that you can't see what's going on right in front of you.