I watched the video, and here is my take on it. Parts of it I agree with and parts I don’t.
I agree with his overall take on slavery around the world throughout history and with growing abolition movement, though those religious groups are not analogous with today’s right or left.
Where I take issue, is here:
The idea that because of history of slavery world wide, slavery in America should have a minor role in our own history. Out history, if you exclude pre-Colonial history, is how long? How much of it included slavery?
Abolition in this country was hard won and not cleanly won. While technically free, that freedom was short lived and the gains quickly reversed through legislative actions and culturally approved lawlessness that maintained inequality and servitude based on race. The Civil did not end the culture of raced based slavery in our country. That came with the civil rights movement long after the rest of the western world had ended it.
It is a significant part of our history, while did not originate but vulnerability (I agree with him there) in our country it became race based because we needed to be able to justify slave labor in the midst of a growing revulsion to it. The way to do that was to dehumanize black people as either subhuman brutes or childlike humanoids intellectually incapable of governing themselves. It is this process, after slavery ended that Sowell conveniently skips over.