Love having those arrows in my quiver when laying out the facts for leftards.
Things like there were more White Christians enslaved in Africa and the ME at the time of our founding than black Africans enslaved in the US.
That Sally Hemings was 3/4 or possibly 7/8 White.
Census results show substantially more negroes were not enslaved than were. There has been some research but it is, as you might suspect, not politically correct to validate this reality.