Being a correctional officer
You can legally kick people's a**es all day.
What could be better than doing battery on a convicted rapist?
What's more satisfying than assaulting a condemned murderer?
What brings more joy crushing a fool who beat his old lady?
They may be human, but so were the people they screwed over to get in the box
If unprovoked leave them be, but if they test you (and they will) its fair game