- Psychiatrists find that most mass murderers don’t fit into any existing category of mental illness. Some suffer from paranoia, narcissism or depression, but the only thing they all seem to have in common is "a kind of magical thinking, like they can read other people’s minds or see the future." https://www.nytimes.com/2016/04/04/health/investigating-the-minds-of-mass-killers.html 3 comments science