Listen, I don't want to sit here and defend a scumbag but to this guy’s defense he did try to sell these kids a knife before he robbed them.    Maybe he was just teaching them a little life lesson.  I mean if you're going to sit there and run a cash business without any protection aren't you sort of begging to get robbed?  It was almost this thug's duty to teach these young entrepreneurs a lesson.    Next time buy the knife and nobody gets robbed.   Sure they may hate this guy now, but in the long run it will probably be the best lesson they ever learn.