Word vomit

How is it that people get the balls to embarrass or belittle others in public? This total lack of respect of another's feelings just to make themselves look important or just to make themselves feel better about themselves. Many times these same people pawn it off as a joke but there's nothing funny about embarrassing someone in public. I just want to be a voice for those that have found themselves in that type of situation. No one's feelings should be invalidated nor should anyone be embarrassed or belittled in public. This is rude and disrespectful to the other person on the receiving end of it.