Somebody who had a 35mm copy of Song of the South gave it to some digital archivists and they did a cleanup of it. So it is preserved.
In the 1980s Song of the South was shown in theaters again. I don't remember Mr. T complaining.
"Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge and how much happier that man is who believes his native town to be the world, than he who aspires to become greater than his nature will allow." Frankenstein