It's true that the Civil War killed hundreds of thousands of Confederate and (preponderately white) Union soldiers.It is also true that those who were killed in the Civil War would have had a lot more descendants if not for the war. The ones who had descendants down to this day, mostly were ones who survived the war.
It is also true that the institution of slavery was accepted throughout history and worldwide, up until the Christians - Protestants more than Catholics, and British more than other Protestants - rejected the institution of slavery during the Enlightenment. Southern Americans were simply uniquely situated to be the last to get the word, because they had a tiger by the tail, and knew it. But there is simply no other culture besides the Christian culture which has ever rejected the institution of slavery, and fought to end slavery as an institution (rather than opposing slavery only for themselves and their kin). The Battle Hymn of the Republic was, let's face it, a recruiting song for the Union Army. You will not find its like originating in any other language than English. Nor any at all, before the Enlightenment.
Black Rednecks and White Liberals - Thomas Sowell
How much in reparations will Obama have to pay?
The only reason Lincoln didn’t send them all back to Africa was that he knew there would one day be a National Basketball Association.
I think every living slaveowner should give every living slave a year’s wages. Oh wait. They’re all dead. Nevermind.
All in all, I wish I could personally pay them all reparations. However, where they are now is a better place, and G-d has set things right. I am sorry for what happened to them. I am sorry for all people in the world who are denied their G-d-given freedom. [None of the slave stories I have ever read are as horrible as what happened to my family in the Holocaust, but all evil is still evil.]
Black liberals need to focus not on reparations because of what happened to their ancestors but on making the struggles of those ancestors worthwhile. Live; achieve; be moral, good, and strong. Read these stories of your brilliant and hardworking, thoughtful ancestors and live the lives these men and women could not.