I would re-phrase this. I would state: I know that slavery is wrong.
We cannot re-live the past; nor can we re-write history. Hopefully, in the early 21st century, we are more enlightened than they were in the past. We should learn from the mistakes of the past and make every effort not to repeat them.
In the early 22nd century they will probably be more enlightened than we are today. I will not condemn the past and hope that the future will not condemn us. Times change and customs change. We can all only try to live a moral life during the time in which we live.
And, I am still proud to be a Southerner and will not be a Yankee -- in this world or the next.
ping