They enjoy being cruel

Usage examples of sadists.

Of our members, all but a negligible fraction are composed of power-seekers, morons who find our service intellectually undemanding, the inevitable sadists whose very nature bans them from all normal civilian employment, the long-time professionals -- the very people who dragged screaming citizens from their beds in the service of the Gestapo are still doing precisely the same thing for us -- and those with a corroding grievance against society: of the last category, Colonel Hidas, a Jew whose people have suffered in Central Europe agonies beyond all imagining is the prime example in the AVO today.