That is so tragic, and needless. I wonder how many officers were there? Couldn't they have just had the guy come towards them with his hands in the air and search him? How very sad.
I didn't see how many in the video. Certainly it would have been nice if he had backup. It might also be better if it wasn't in a hall, where it is a choke point for both sides (lack of places to cover each other from).