I remember there was one anti-vax group called Autism speaks that made a "documentary" that included a woman who said when she found out her kid was autistic she planned to lock the kid in her car and push it off a cliff. And she only didn't because of how it might affect her "normal children". And she said that right in front of the kid, who is perfectly capable of understanding what she said. And the anti-vaxxers completely took her side and were all "Look how hard it is to raise an autistic child poor woman."
Add to that the fuckers who try to cure autism with bleach enemas and there is a shocking number of people who would rather see kids dead then autistic.