I had asperger kids over the years myself in school; that's one group of kids that usually can function if we make a place for them. Freepers should realize the vast majority of these kids are not dangerous and any one of us could have a child with aspergers too.
I have worked with more than two dozen students who were diagnosed with Autism and/or Asperger's. With the correct program to address their needs, most of them were as successful as their potential allowed. Some of them were quite bright (High Functioning Autism/Aspergers), but had significant social deficits. Most were able to be taught skills to overcome these deficits. NONE, and I emphasize NONE, were ever violent to the point of committing such a horrid act of terror as this shooter.
There was one case I worked on with a student (third grade at the time) who I have often worried about engaging in an act of violence of this type. He was identified as Emotionally Disturbed. At an early age he was torturing neighborhood pets, and tried to BBQ the family's cat when he was age 5. I lost track of him after he ended up in a non-public lock-down program. To this day I recall his name, and his face. I pray I do not read about him in the news.