Ah, but my dear---so many of us are downright Pharisaical about...so many things.
In other words, people have to recognize that they are actually engaging in a wrong, hurtful, or unjust behavior---they have to confront themselves and be completely unable to rationalize away whatever it is they do that they ought not be doing in the first place, and not simply recognize it in others.
They have all sorts of explanations to excuse their actions, to themselves and their like-minded friends or cohorts.
They have a thousand ways to make it right if they engage in it, but of course it's wrong when others do it. In other words, bullies never see themselves as bullies, just as snarks either never see themselves as snarks or they make snarking all right to do because "[They] don't say it to the person's face so no feelings are hurt."
No?
Can they be sure it never gets repeated? The Chinese say, "How many can keep a secret? One."

At any rate, believing themselves to be totally good eggs, even if humanly flawed, is how they go on bullying and being okay with doing it.

I expect I'll have infuriated a lot of those people who read your journal. That will be in part because in order to explain and defend my personal beliefs on this and related topics, I'd be writing a thesis, and a very long, wordy thesis at that, far too wordy for a LiveJournal comment.

So, let me sum up as succinctly as I can:
Have you seen that quotation on the public page of my journal? "We are all inclined to judge ourselves by our ideals; others, by their acts."