Some animals are more equal than others (the core of liberal philosophy). If the same comments were made about a gay or black student, it would be a "hate crime", but not for Autism until families dealing with Autism march lockstep with the Democrats and vote as a block. I prefer the moral alternative - don't bully anyone, treat all kids politely and with respect, and deal appropriately and firmly with parents who allow bullying of any kind.
That or until parents with autistic kids sue the crap out of the schools or the parents of the bullies.