Really??? I don't feel that obligation. Just because someone else is a a$$hole doesn't mean I need to confront them.
Also notice that the attacker was advancing to continue the violent assault until the moment he saw the gun being drawn.
I haven't seen the video. Just going by what others have said. I have heard two stories, one where the assailant was coming back for round two, and another where he was retreating. What actually occurred at this point will determine the jury outcome.
Really???? Is there any crime you might witness where you would feel an obligation to confront?