>>After all, it was white colonists who forcibly removed Africans from their homeland and brought them to America to serve as slaves on plantations.<<
WRONG, WRONG, WRONG, A THOUSAND TIMES WRONG! It was Mohammedan traders who did the selling and controlled the supply. Without Mohammedans, there would have been no slave trade.
The article is not worth my time to read when it opens with a false premise.
And slavery was the norm in almost every country around the world, way before our country was formed. If you were against slavery back then, as many founders were, you were not in the mainstream at all!