I had a friend who was an absolute mess in his teens and early adult life. Just an absolute anarchist, but really nice and fun to be around. I haven’t seen him for a few years in our mid 20ies. Turned out, that he somehow, for some reason became a cop. He became the biggest shitbag imaginable. Things like abusing his “powers” to stalk women, exes and shit like that. None of his old friends wanted to hang out with him anymore. I once saw him when i was out. Someone dropped a glass accidentally next to him and he completely lost his shit and put him in a armlock, with that sadistic ass smile on his face.