We hear endlessly about Slavery. Slavery is always the fault of white people, especially the Founding Fathers, the Confederacy, and Robert E. Lee.
Slavery is never the fault of black Africans who engaged in slave wars against one another. Slaves were a status symbol. When slave wars produced more slaves than victors could afford to maintain, the Africans began selling each other to the Arabs. When the Europeans discovered the New World and needed a work force for the rice and sugar and later cotton plantations, they purchased Africans from the black Kingdom of Dahomey.
Before propaganda and the teaching of hatred of white people took over from education in American universities, the origin of the slave trade was well known. Books, such as Karl Polanyi's Dahomey and the Slave Trade, described the facts of the African tribal slave wars.
One would think that Polanyi's book would be a textbook in black studies courses, but since the purpose of black studies is to demonize white people, today Polanyi's book is regarded as racist. It is out of print. Amazon lists six used copies available at prices ranging from $121.37 to $208.23. Clearly, blacks are never going to learn anything factual from black studies.