It is unlikely that overall there is anything that will change the deeply-ingrained attitudes of the typical racists, no matter where they live. The aging (and dying off naturally) demographic though will lessen the severity of the problem. Yeah, many of them managed to instill the same unreasoning hate in their kids.... but those kids also grew up and were exposed to minorities in popular culture who are admired -- recording artists, actors, sports figures, political leaders, teachers, health care providers, etc. This overcomes, eventually, the fear that is the root of racism. I have a lot of hope for both the South and for our country, as the old guard passes into history and the more open-minded youngsters take their place. I have also long admired the premise behind the Peace Corps. Missionaries sometimes use the same model. We win friends, converts, and spirits by lifting people up out of fear, poverty, and despair. Not by giving them money, but by showing them how to work towards prosperity and peace themselves. Education is a big player in this, and is why leftists in general support public schools and affordable higher education.
Think for a bit why conservatives in general deride education, public schools, and universities.