This video's been around for a while, but watch it and then...
... remind yourself not to ever get that close to some one who is so obviously out of control. Let the cops handle that stuff.
Oh, did you notice the police officer had contact with the guy, backed off and then re-acted- keep that in mind too. Reaction is a great thing- unless it comes after the bad guys reaction of popping you in the head. Don't be afraid to ask to have someone cuffed.
Enough, stay safe and keep fillin' those holes in the schedule.