But it was about slavery so it's not seen as positive.
--------------------
If The War of Northern Aggression aka The Civil War was "about slavery" why, then was the selectively liberating Emancipation Proclamation only declared after 2 years of fighting during which the North was losing & after the "Draft Rebellions" in N.Y. & elsewhere.
Please remember that the E.P. only liberated slaves in the states that had already succeeded but left slavery intact in the States fighting with the North, therefore it was simply a meaningless grab for the moral High Ground & to justify the institutionalized plundering.
I cannot think of any examples in which Industrialized nations have existed, peacefully next to agrarian societies rich in natural resources without contriving some excuse for seizing those resources. For example, the European Colonial Powers didn't form Colonies in Africa to Christianize Africans, they went there for the natural resources.
Another of the many different reasons for the "Civil War" was that the North was settled primarily by the Puritans while the south was primarily settled by England's Royalist Cavaliers. Essentially, the seeds of differing lifestyles, Religions etc England's Civil War were transplanted in the American colonies.
As I'm sure you know, Lincoln despised Black people & his initial post-War plan was not to welcome then to his Northern neighborhoods but to, literally, ship them back to Africa.
Finally, I voted "No" because I see how the Confederate Flag is used by Civil War re-enactors as an exacting & harmless hobby that is both educational for school kids, beneficial to modern day Military career Officers in the study of tactics & to supplement Movie productions.
Because I'm a blacksmith, I've learned a lot by making reproduction Civil War Medical artifacts, cannon parts, cooking equipment, weaponry & countless odd tools used while digging trenches, building the Ironclads & ill-fated submarine.
I have yet to see hatred in any of these re enactors / historians. I suspect that the same is true to individuals interested in their family history.
I don't display a Confederate flag even though one of my non slave owning ancestors fought for the South. I wouldn't display one, publicly, simply because it may be misinterpreted & hurtful to some of my neighbors.
I doubt if I've changed your mind but hope to have shown you a different side of the issue
Thanks