A very important fallacy to remember is the just world hypothesis.

A thriving civilization brought democracy, the republic and free speech which allowed many improvements in society.

But civilization has improved so much, and religion has really taught us the world should be fair, we still have good vs evil ingrained in our thought system.

Evil is completely natural, so you can't bring progress if people refuse to investigate where there's evil.

When people are really able to understand the world is unfair by definition, and that fairness is the exception and not the rule, everything becomes much easier.