So let's say there are no inherently evil qualities in humans, even though millenia of history show us this is completely not the case. But let's work with your theory. It's all about levels of self-hate.
What does it matter where the evil comes from then if they are going to completely oppress peoples and governments? At what point does self-hate that leads to horrific actions, thoughts, ideals and support of evil actions actually become evil? Was Hitler just a misunderstood painter to you? You could be being tortured by the future GQP gestapo and trying to talk to them about sufis and their internal pain while they get ready for that final lethal shock of electricity to kill you after having murdered your family, all while laughing at you. And you'd still be oblivious.
I don't care where it comes from, it's evil.
I hear in your world concern that without your hatred of evil you would vulnerable to terrible things, things that you project would be my fate because of what I believe. I thank you for that concern. I certainly wouldn't want that happening to you. It is a fact that people you call evil are dangerous because they can act out their insanity, their belief that other people are not only evil but should be made to pay for that fact. But my thinking runs more along the lines that people have been programmed to conform to whatever morality they happen to grow up surrounded by and because our culture is sick they are infected by that sickness. But I also believe that people can overcome their programming just as people who undergo psychotherapy can gain self understanding that changes how they feel.
So when you say you don't care where evil comes from you place an obstacle to your own self-understanding. That's no skin off my nose but it think the only person it really hurts is yourself. I think that is unfortunate.
So let me suggest something else. Do you believe that animals are capable of the evil you see in human beings? If not why not and if so why so?