"Those who seek to defend slavery as practiced in the United States and Confederate States of America should, in the interest of leading by example, agree to become slaves themselves, and agree to have their descendants become slaves in turn."
I've not read a single post on this thread in literal defense of the institution of slavery, as practiced in the USA or the CSA. Fact of the matter is that it existed prior to the formation of either; it was a practice of the European colonists as well as many of the native peoples present on this continent. Chattel slavery as it was understood legally was something of a throwback to feudalism. It was abolished, in large part, by Christians, both here and in England. Save the high-mindedness for those nations, such as Cuba and Brazil, where the vast majority of African slave descendants reside. Or, better yet, try it out on the Sudanese Arabs, who practice slavery to this day.
"I've not read a single post on this thread in literal defense of the institution of slavery, as practiced in the USA or the CSA."
If you're defending the Confederate cause, you're defending slavery. I don't care if said defense is "literal" or not. Slavery was the cause of the Confederacy. Any effort to defend the one must necessarily defend the other.
So, if the Confederate cause was good, then slavery must, in turn, be equally good.
"Fact of the matter is that it existed prior to the formation of either; it was a practice of the European colonists as well as many of the native peoples present on this continent."
None of which actually makes slavery morally good in and of itself. But that's the case being argued by the Lost-Cause folks. So, which is it? Is slavery evil, or is it good?
"Or, better yet, try it out on the Sudanese Arabs, who practice slavery to this day."
If you're saying that the Confederate cause is good, then you're saying you have absolutely zero moral objection to slavery. So, if I just described you, get on a plane to Khartoum and volunteer for slavery.
Or is it a case of "slavery is good, as long as I'm not a slave myself?"