I don't want to exaggerate, but this book completely rocked so many of my assumptions about the nature of slavery and racism in America. It develops the point that slavery in America was not some remnant of a pre-modern barbaric society, but rather a "modern" and almost "high-tech" driving force in America's "progress". The dot-com boom of the 1800's. Built by the commodification and destruction of black bodies in an advanced system of capitalism.
Also, I found this book's treatment of Christianity surprising. One chapter made me cry at the beauty of many black peoples' faith in the midst of chaos. The other made me livid at the genocide and injustice that the white church in America was part of.
This book is dynamite, and super relevant. It argues that the white race is a fairly modern construction. The stamp of "white" was built as a barrier of entry, a "passport" into a dominant American society. Originally even German and Irish immigrants were not "white".
Both books brought me to my knees in disgust at my ancestors' cruelty, repentance for my own racism, and sadness for the way race is being used as a weapon today.