Asperger's Syndrome is a higher-functioning form of Autism. In 2012 it was reclassified in the DSM (Diagnostic and Statistical Manual of Mental Disorders) under the umbrella term "autism spectrum disorder. Some have called it "autism lite" but the change may signal issues in how children receive services for this condition.
Autistic author and activist Temple Grandin expressed a similar fear.
is my opinion that social communication disorder is part of the social
impairment continuum of the autism spectrum. I fear that many Aspies will be switched into this diagnosis when school districts get short on funding," she wrote on her website.
Most of us know people with Asperger's (whether we know they for certain that is diagnostically true) because we have all met people who seem socially awkward, unable to make those connections - intuitive to most of us - that make relationships and who have difficulty with focus and follow-thru. Many adults are figuring out now that Asperger's is more widely known, that they may have this condition. Some believe that many very bright/gifted people like Bill Gates may have Asperger's.
I bring this up because there are now two terrible crimes that have been committed by young men with Asperger's. One was Sandy Hook Elementary and now in Santa Barbara. In the latest crime, the young man stabbed three people in his home before shooting six and then was killed himself (it is unclear if he died because of police fire or on his own). Nine people were killed and 13 injured in the crime spree.
The latest one was by a young man who had posted a video(s) to YouTube, about suicide and murder and his despair over a lack of dating. His family had asked police to check on him and he was interviewed and let go. (It is unclear to me whether they asked/knew that he owned a gun.) He had been treated by therapists. There is reason to believe he may have been bullied even as an adult.
But the issue is not necessarily his Asperger's but the effects that caused him to have mental issues over the outcomes of his condition. It is somewhat similar to the young man in Sandy Hook who withdrew from social interaction and then went on his rampage.
I am not a psychiatrist nor did I know either young man. But my own experience with Asperger's is that most people with this condition are very loving and gentle. They tend to get frustrated just because the world - almost every single day - seems confusing and difficult for them to understand how to navigate.
I believe that any violence on the part of those with Asperger's is about mental illness and not their Asperger's.