Confederate Shame and WTFness

"The American Civil War, widely known in the United States as simply the Civil War as well as other sectional names, was a civil war fought from 1861 to 1865 to determine the survival of the Union or independence for the Confederacy. Among the 34 states in January 1861, seven Southern slave states individually declared their secession from the United States and formed the Confederate States of America. The Confederacy, often simply called the South, grew to include eleven states, and although they claimed thirteen states and additional western territories, the Confederacy was never diplomatically recognized by a foreign country. The states that remained loyal and did not declare secession were known as the Union or the North. The war had its origin in the fractious issue of slavery, especially the extension of slavery into the western territories. After four years of combat, which left over 600,000 Union and Confederate soldiers dead and destroyed much of the South's infrastructure, the Confederacy collapsed and slavery was abolished. Then began the Reconstruction and the processes of restoring national unity and guaranteeing civil rights to the freed slaves."

Correct me if I'm wrong, but I believe this means that the people who supported the South back then were people that fought, killed and died in the name of slavery. The confederate flag was basically a the symbol that unified all of those Americans who were pro-slavery in the South.

Now, why are some people proud of this flag? Why are people proud of this confederation? Even people who are born in this part of America should be ashamed of that South that fought to defend slavery, especially Christians. The Bible Belt, huh? Unless you're a member of the KKK, your South shouldn't be the same South from the Civil War.

Once upon a time the Nazi flag represented German pride, it was the flag of a great nation that became great because of their hard working people. Would it be OK for the Germans to adopt the Nazi flag again? I mean, they are still proud of being citizens of a great nation, and this is what the Nazi flag represents, it's not about killing millions of Jews. Would that be OK? Of course not, Germans are ashamed of that past and that symbol, regardless of how many good things came with them. You should be ashamed of the South that fought in the Civil War too. I don't care if you're a Jesus loving Republican Texan cowboy, you should be ashamed of the Civil War South and its flag.

I think the confederate flag looks cool, I love the design, but I'd only have one as a novelty if I was into collecting historical items and memorabilia, like a WWII collector would. Why the confederate flag has not been banned? How the hell it's still being officially used by some states? That's rather shocking to me. I guess the most powerful and developed nation in the world still has some very underdeveloped aspects and unless someone explains to me how the use of the confederate flag is justifiable (if that's even possible), then I can't help but feel shame for you guys. I might even cringe a little the next time I hear someone talking about pride for that flag, WTF? :/

I'm not American and I know very little about the Civil War, so there's a chance I'm just misunderstanding something, please, someone tell me this is the case.