Just relative to the world that we live in now, I'm much less interested in traditional concepts of 'good and evil' and much more interested in fanaticism. While there are certainly genuinely evil human beings out there, in my (maybe totally naive, I dunno) view, they are generally not very effective- more like low-level street criminals. Psychopathy is a real thing, but I think most of them lack the foresight and patience to achieve real positions of power.<p>On the other hand, fanaticism where the fanatic believes they're good and their (political, racial/ethnic or religious) opponents are evil seems like approximately one billion times more of a problem in modern human society. These are the people who hold actual positions of power at every level, in every country