Why do I always get pushed around, even when I have done nothing to them?

It doesn't have to do anything with doing something wrong. They are just trying to show that they are stronger. Do not let them.

People tend to focus on not those who fit in with the group but those who do not. If you are getting pushed around, hold your ground and communicate what you want until it is done.

You can get pushed around even when you had done nothing wrong because they want to feel better about themselves about their situation or even they are in need of something at the moment.

It's not you. You haven't done anything to them, and yet they're treating you this way. I think it's because they have some demons of their own to face. It could be anything, family life or grades, and they're taking it out on you. But whatever they do, it's not your fault. You could try negotiating them to see if they will listen, and if they don't, know that it is not because of anything you did, but because of something that's happened or is happening to them. There are better ways of taking out these emotions, like talking to someone like you are now, and maybe that is what they need to feel better about life.