Handman said:

I might regret saying this, but I just don't think this is one of those problems we can solve. As far as I'm aware, it's human nature to do this sort of thing, and the only "solution" is to teach everyone the effects of it, tell them it's not that nice to do, and offer some methods to cope with it.

To quote Lucas:

" It's stylistically designed to be that way and you can't undo that. But we can diminish the effects of it."

It is taught though. Most bullies don't know or think that they're bullying.