For the most part, I agree with this, but I think there is something deeper than teenage rebellion going on with using hate speech in trolling. People all over are suffering, as you mentioned, because there are many dimensions to oppression. Poverty, lack of education, mental illness all cause the same type of hurts and injustice as racial and sexual oppression, and people get angry. I think telling at people to die of AIDS or something horrible is a way of dealing with that anger and injustice. It’s similar to teasing your dad, in that you are doing something that doesn’t really make sense to get a rise out of someone, but it comes from a much darker place than teenage rebellion.