I'm amazed things like this don't happen more often considering how many people make these kinds of videos winding up random members of the public. Obviously nobody should be shot, but if you think it's funny trying to get a rise out of someone for a video then surely you should understand that one day you may do it to the wrong person
The guy asked him to stop 3 times and tried to push his phone away but he shoved it back in his face again
(sorry for the DM link, it's the only article I could find that didn't have a paywall)
https://www.dailymail.co.uk/news/article-12583491/Moment-YouTube-prankster-Tanner-Cooks-stunt-goes-badly-wrong-shopper-targeting-pulls-gun-shoots-chest.html