@RickiTarr There's a lot. How they treat animals. You don't have to fawn over my cat, but at least don't push her away or make a rude comment if she comes by to say hello.
Double standards. It's okay for them to do certain things but heaven forbid anyone else do it.
Too much soapboxing about social or political issues. Even if I agree with you, enough is enough.
Not caring about issues that don't involve them. Not even trying to see anyone else's point of view.