I'm absolutely shocked to find that so many viewers here are still fighting the Civil War and hating those unlike themselves, and yet, do not know what the war was about.
It was about federal power versus state power; it was about taking half the land and resources away from the American union, and having sovereign enemy nations on the other side of a former state line within North America, as it is in Eastern Europe; it was about huge landowners made wealthy by free labor from kidnapped people sold into brutal slavery, versus a more interdependent "middle" working class; it was about an agrarian society versus a manufacturing and trading society; it was about being a large nation that had the power to act in the world as one entity, one force, versus many small nations quarreling amongst themselves--as we almost are again; it was about many things. It was about the breakdown of this nation as a union, such as we almost have again today. It was about irreconcilable differences--a divorce, a battle within a family.
The American Civil War was not about "Northern aggression," as some put it here. You may note that the North and South are not today separate enemy countries, with separate governments and taxation and economies, though a few here would apparently like to think so; and there are not numerous small sovereign nations faced off against each other in North America. It would have been so, had many states successfully seceded from the union.
While we can still find slavery hidden in our tomato- and strawberry-picking migrant labor force, and teenage sex slaves in our major cities and at every Superbowl, at least slavery has been reduced here since the Civil War. People with darker skin are no longer automatically beaten and put into chains when seen alone in public--though there are still plenty of cases of being arrested for merely "DWB." (Ask around if you don't know what this means.)
There is no justice in war, there is no sense in the middle of a war, and there is often no law or decency in war. Every party to every war has committed unthinkable atrocities. If you think all Southerners were or are exempt from committing inhumane atrocities, you have selectively missed much of the information in this film and in the news.
Please pay attention to the plight of the human beings on both sides of the war, in this and in many other films and books. Look at the war from the point of view of each person in this film. Let us work together to find some middle ground, and rebuild this country. It has been torn apart enough.