Today progressives sort themselves into oppressor based on how white they are but as Sowell points out, it was only (“white”) Europe and America that recognized slavery as a moral problem. Britain tried to impose its anti-slavery stance on the parts of the world it ruled, even patrolling the East Coast of Africa to stop the Arab and African slave traders who brought their human cargo from the interior of the continent to coastal ports. Under British pressure, Saudi Arabia and Yemen abolished slavery only in 1962, Oman in 1970, and it still exists in parts of Africa.

Rank ordering yourself into oppressed or oppressor based on immutable characteristics is stupid and immoral.

Humans of all races have been oppressing other humans since recorded time