Is it wrong for me to yell at my bipolar uncle?
Are you angry at your uncle because he is bipolar?
I don't care about bipolar people, but I'm angry at my uncle.
You've got to remember that he's going through a mental health struggle everyday. It's understandable to get angry, but try to be patient with him please.
He is hated by everyone.
People likely do not understand your uncle's condition. It's best to not take everything personally and instead get to know your uncle better by understanding what he is going through.