What are the most radical nonfiction books?

I'm talking "radical" in the sense of arguing for extremes.

Some examples that come to mind:
– The Bell Curve
– The Trauma Myth
– Das Kapital
– Communist Manifesto
– The Little Red Book
– Mean Kampf
– The Virtue of Selfishness
– False Alarm
– Thr God Delusion

Any perspective or political bent, but truly radical.

I'm hoping to make better list of "controversial books". Instead of commonly banned books, I want to put books that advocate for extreme ideas. To me, those are the ones that are really most controversial.