I don't think it really matters. "Evil" isn't an archetype meant for describing psychopaths. It's meant for describing people like Al Qaeda. Or, if you happen to be a member of Al Qaeda, for describing Americans. It's a form of dark arts used by Azathoth to make us behave in a way that we, personally, do not wish to behave in. Don't repurpose it for a tiny portion of humanity that acts vaguely like that by coincidence. Abandon it.