Beam me up.
Here, I'll try to explain it. You see, slavery in the south was more benign that folks realize, and would have gone away within a generation or two or three, Civil War or not. Folks just needed to be more patient.
On the other hand, if the city requires a permit to add a wing to your house, or if a cop writes you a seatbelt ticket, or if the city inspector writes you a citation for the junk car in your front yard, well, those are all outrages tantamount to slavery, and cause to take up arms to overthrow the government now if not yesterday.
Does that make it clearer?
The "pastor" who wrote the bilge supporting slavery is Doug Wilson, one of the Federal Visionary school -- he's Reformed.
Sherman did his best, but some people really can't take a hint.
Slavery still exists in Africa but is ignored by American black leaders. It seems as if blacks owning other blacks is OK with them.