Quartz has a good article about how the Civil War was over slavery, not states' rights

The article is here:

http://qz.com/378533/for-the-last-time-the-american-civil-war-was-not-about-states-rights/

It’s a self-delusion some use to justify neo-Confederate pride: stars-and-bars bumper stickers, or remnants of Confederate iconography woven into some of today’s state flags. “It’s about Southern pride,” they insist. “It’s about heritage”—forgetting, intentionally perhaps, that slavery and its decade-spanning echoes are very much a part of the collective American heritage. Confederate denialism, in the form of states’ rights advocacy, permits sentimentalists to keep their questionable imagery without having to address its unsavory associations.