Agree with this.
I worked with the police, not all are bad but certainly some bad eggs are attracted to it. Similar to teaching, some will have bad intent outright, others just harden and go powermad, and others try really hard
Its like the army, theres a certain type of person that's attracted to that kind of work and even those with good intent need to carefully watch how power goes to your head
The armed forces often deliberately recruits people who are vulnerable etc, and the police used to be similar