I'm not going to defend a negative generalization of all autistic people, however I am going to ferociously defend thinking or dreaming of killing someone being perfectly normal.

I had an investor in a company I started who used his position as a giant dick-waving platform. He would constantly come in and tell us that we shouldn't be paying ourselves salary, or that he could make more money by opening a lemonade stand.

Eventually I started having thoughts and dreams about, if not killing him, him having a terrible "accident."

I think if you haven't wished death on someone ever in your live, you're either living in denial or haven't met a wide enough range of people. One day you might have to associate with someone who's entire existence you find vile and pointless, and you might change your tune.

A Zen teacher I listen to by podcast, said that one of the nicest things his Zen master told him when he was a student was: "Sometimes people have weird thoughts, and it's OK."