If you want the realest example I've ever read (and I've read a lot) of an honest criminal hater psychopath [that accepts and understands who he was and why]... read Panzram. TRIGGER WARNING: All the triggers.

tl;dr: `Hate` is typically caused by family/society: most Monsters are made, not born. It's usually the result of early life trauma developing into ignored addiction[s] (with certain predispositions as exceptions, of course).

Trivia from Panzram: he helped build Leavenworth Federal while he was serving time for murders/rapes in Leavenworth State; then later served an additional sentence (for murders/rapes) in the prison he helped build.