Posted to illustrate a concept people like you never seem to grasp: Though we must always be careful to look at history through the eyes of those that made it, there are some concepts and practices that are so morally corrupt that those who supported them (like the CSA, or Hitler's Germany, or Imperialist Japan) have no defense, regardless of what they believed. The Confederacy secceded soley because they feared that Lincoln was going to make good on his promise to end slavery. Any additions to that statement are revisionism.
Your picture of General Sherman gets a slaveship for an answer, for this simple reason: We fought that war because your side didn't think that black people had any human rights.