I am 40+, I went to a high school with only 2 black kids (they were brother and sister), dated the sister of a skinhead (because she was the hottest chick in school), played competitive hockey, have two very good friends who are gay, had a father who was dark skinned Portugese/Azore and my niece has brain damage. I have been around racists, idiots, bigots, homophobes, dregs of humanity and other monstrous people. I have never heard anyone use "autism" or the word "autistic" as an insult. Maybe I just don't see a lot.