The video is insane.
Guy is hip-shooting an AR. AR has an optic on it. He never once shoulders it. No effort at any semblance of aim, just a very dangerous noisemaker. Even when pointing at a shot and injured woman on the ground and having a conversation with her. He didn't finish her off... evidently 3 total injured, none life threatening, no dead.
This is deliberate terrorism. And it is NOT going to have the effect this guy wants in AZ.
It'll probably result in further relaxation on carry in restaurants and bars, if anything. If not legally, at least culturally.