I once learned African slaves were slaves because they were the losers in tribal warfare. Their choice was slavery or death at the hands of their captors. They were sold in Africa, brought to America, and resold.
Repatriating them would have been certain death or re-enslavement.
Then, the white Democrats learned they could cut out the middleman and capture their own.
FIFY
Other than that, spot on. The uneducated triggered crowd hates reality and fact, so they reject the notion of Africans capturing and selling other Africans into slavery. They also hate the reality that the Democrat Party is doing pretty much the exact same thing today.