In the 2000s I knew a guy who was transitioning to software development after working in HR at a large American police department. He told me you couldn't become a cop unless you had a mental illness. They psychologically screen candidates to filter out people who have too much empathy. They would reject you if you said you had a close relationship with your mother, for example. They wanted people with aggressive tendencies. They loved it when someone had a superhero tattoo or had a parent die when they were a child.

People always comment that we need to do more screening before people become cops, do more training. The screening and the training are the problem.