The main problem at my high school was that people, both students and faculty, were constantly parroting shit they heard from Fox News (which is constantly promoting stuff under a racist agenda) and weren't in an environment that made them think about how their actions impact other people (which means the education system obviously failed at its job), so they would believe stuff like actual racism doesn't exist anymore and black people are oppressing white people and speech doesn't hurt anybody, and the extreme lack of diversity didn't help either. However, if you were to have a serious conversation with them most of them would say that racism is bad, so I think that if people actually had an understanding of the world beyond Fox News propaganda a lot of the edgy racist stuff would die off. With queerphobia there was the opposite problem, where people would bring up queer stuff in jokes to look edgy but in a serious context they would say that queerness is morally wrong.