Don’t Do It
You can never excuse the act of tormenting or teasing someone else. It is just not acceptable. Who should have the ability to make another human feel downtrodden? No one. People need to realize that they are, in some way, complicit when they idly stand by and watch someone have their life ruined. We all have a duty to one another to protect each other in the way that we would like to be protected.
Getting The Word Out
The best place to start towards the eradication of this horrible trend is to make the antagonizer aware of his or her actions. How would they react to being given the same treatment? As soon as you get this through to the browbeater, you are one step closer to nipping this trait in the bud. It all comes down to empathy. If people can be made to feel the way that they do their best to make others suffer.