I think you have to work "we are baddies" into your entire system of thought. The best example I can think of is Judeo-Christian thinking has the idea built in

I think you have to work "we are baddies" into your entire system of thought. The best example I can think of is Judeo-Christian thinking has the idea built in through the fall from paradise, Cain killing Abel, and broadly the repeated arc of humanity forming a covenant, breaking it, rinse, repeat; Christianity adds the whole story of Christ being crucified. And I think that works, conceptually, because God can be good while people are awful. God is this immutable, objective "good" that we can't argue with or rewrite as we please. Similarly, science can say that its theories are all wrong (bad), but the universe is right (good), so observations trump theory. And a republic can work as a form of government because its premise is people are awful but reliably self-interested, so you can construct a structure of government that pits those different interests against each other and results in a big stalemate. There the "good" isn't very good, but self-interest is at least consistent, and the desire for a continuing political stalemate over a civil war is good enough. So for an ideology to incorporate "we are baddies" into itself, it probably needs some external thing to be the "good" that it looks to, but that "good" has to be something that can't be easily rewritten to be whatever you want it to be.