WOW!! Where to start? First of all, why was the fellow in that area to begin with? He had to have known it was a dangerous area, and I doubt he had any business being there. With that being said, I know it was his "right" so to speak to be there, but it seemed as if he was agitating the locals. Also, the video quality was poor, and I missed the part where his life was in danger. It seemed as if he had ample room to make an escape, and his commands could have been better. Back the bleep up should have been followed up with or I will shoot you.
Self defense? Without being there at the time of the incident I cannot give a good opinion on that situation.
Overall I think the dude was a fool and handled the situation poorly.