My take is that evil might not actually exist, at all. I mean, it's kind of hard to even define evil, and for every act you might call "evil" there's a bigger or another context in which the same act dictates the survival of a majority, so evil actually is a matter of moral subjectivity and emotional appeal, on wars for instance, both sides usually regard the other as evil.
I think what exists is twisted psychologies, psychiatric disorders and instabilities that lead some "agressors" to their acts, but i would say that all of these people can't really be called "evil" as for them, there's a rational explanation/motivation for their acts that are actually not so "evil", they are just , "peanuts".
I think what exists is twisted psychologies, psychiatric disorders and instabilities that lead some "agressors" to their acts, but i would say that all of these people can't really be called "evil" as for them, there's a rational explanation/motivation for their acts that are actually not so "evil", they are just , "peanuts".