this would definitely get plead down to a misdemeanor and a fine. no one was hurt, the guy didn't point the gun, so its pretty much a non-incident. and then the fact that the video maker is an annoying fucking fag who was out there to harass and bother people explicitely and refused to leave this guy alone means a prosecutor doesn't want to present this to a jury. there is a good chance at least one juror wants to see that fag shot.  so they would just work out a very light plea deal. some sort of misdeameanor threatening or disturbance charge with a $300 fine and anger management program or something.
United States