"a certain kind of people goes to work in law enforcement or security"
Those people you have observed, did you know them before they went into that line of work? Were they more likely than your other, less aggressive/superior-feeling/authority-seeking acquaintances, to go into that line of work?
I'm not saying your hypothesis is not true (there may be something in it) but there is danger that (i) we mistake the cause for the outcome, and/or (ii) judge people's personality based solely on the way they behave whilst doing their job.
My "hypothesis" is based on three people that I know that wanted to work or did work in law enforcement. I've met two of the people I'm thinking of before they applied to police school.
But I'm aware that those are just anecdotes that just accidentally might fit a plausible narrative...
Those people you have observed, did you know them before they went into that line of work? Were they more likely than your other, less aggressive/superior-feeling/authority-seeking acquaintances, to go into that line of work?
I'm not saying your hypothesis is not true (there may be something in it) but there is danger that (i) we mistake the cause for the outcome, and/or (ii) judge people's personality based solely on the way they behave whilst doing their job.