a big cheer to you, linka!
beating up the young guy may seemingly let you vent your anger a little, but it could also get you into some serious trouble with the law. self-defense is absolutely necessary, and handle the situation with some tactics may be more effective. next time when you run into things like this, please yell on top of your lung: “Stop! Don’t you have a heart?” and ask people around to call the cops. usually, the onlookers are people who probably don’t know what is going on or simply don’t know what to do.
in case like this, it may not be a surprise if that young bum might be a plain cloth security guard. right?