Basically, if you hate someone and gather up a bunch of people to go after said person to avenge a wrong done to you, it's because you hate them and want them to suffer.

It won't be a fair thing. It won't be a just thing. It won't hold water legally, and probably not morally or ethically either.

You hurt them because you hate them and because you can and even though there's nothing fair about it, it makes you feel better/bigger.

But it's fake; it's not fair. It's only an illusion of peace.