He's also totally wrong about the capturing part. Slavers didn't go running after natives in the jungle like they try to comically portray in Hollywood movies. The slave trade ship captains didn't even need to disembark most of the time, the chiefs of tribes that had conquered other tribes willingly delivered their captives to the shore or even sold their own people off for practically nothing. Africans need only look in the mirror for who was to blame for the propagation of the slave trade and they haven't really evolved much since then.