"Her ancestry does not go back to American slavery. To the best of my knowledge, her ancestry doesn't go back to slavery at all."

... Why do you think that former British colony Jamaica is populated by people of black African descent? https://twitter.com/existentialfish/status/1293361438015336449?s=20

There are obviously genuine differences in historical experiences in the US between 20th century Afro-Caribbean immigrants and those descended from enslaved people in the US south.

But there are commonalities, too, and not only abut the color bar and 20th c prejudice.

The British empire established plantation colonies that were, sooner or later, supplied with labor by enslaved Africans on both the North American mainland and Caribbean islands.

The Atlantic Crossing and plantation slavery is shared history.

The slave colonies on the mainland revolted and left the Empire in 1776; those in the Caribbean did not.

That's not a racial difference or an ethnic difference between the two groups of enslaved people of African descent.

Seems telling that @marklevinshow immediately gravitated to nonsense in his attempt to inflame the importance of a difference that amounts to "on which side of an aquatic border within the British empire was the plantation where your ancestors were enslaved?"