These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Song of the South
Adaptation Displacement: The tales of Br'er Rabbit which the book on which the movie was written got preserved, were original African-American folktales. With the suppression of Song Of The South, these folk tales (which would have been lost to time) have also been suppressed.
Though the Br'er Rabbit tales themselves can be found in some older Disney "collection" books, usually ones dealing with "Tales From America".
Ear Worm: "Zip-A-Dee-Doo-Dah", "How Do You Do?", "Everybody Has A Laughin' Place", etc. If you haven't seen the movie, these worms may have still found their way in your ear via the Splash Mountain ride, Disney compilation albums, Sing Along Songs videos, and (especially in the case of "Zip-A-Dee-Doo-Dah") general pop cultural usage.
Fair for Its Day: And arguably not only fair, but brave. This applied to the cast as well. Walt Disney absolutely loved how well James Baskett played the part of Uncle Remus. Originally, the actor was only going to voice an animated animal until Disney gave him the lead. To top it off, Disney put a lot of effort into seeing that Baskett got an honorary Oscar for his performance, making him the first African American man to get any sort of Oscarnote His co-star Hattie McDaniel (Aunt Tempe) was, of course, the first African American woman to win an Academy Award, for Best Supporting Actress for the part of "Mammy" in 1939's Gone with the Wind.
Heartwarming Moment: When all the farm workers are gathered at the door of the plantation, holding a vigil for Johnny (recently injured by the bull).
Macekre: Disney has occasionally circulated a cut-down version featuring only the animated segments; this still got Bowdlerized a bit for Splash Mountain in particular, Brer Rabbit is caught in a Beehive rather than a Tar Baby.
Political Correctness Gone Mad: A lot of people see the negative reaction toward the movie as this. They using arguments that the blacks here were supposed to be only former slaves who just happen to working on plantation, they can interact with whites without any disgust remark, one of the black's a hero here, and there are alot more potentially offensive movies that didn't get those racist flak.
When Uncle Remus tells Johnny about the dog, who one could only assume was drowned, though at the end when the animated characters show up in the real world, the puppy is shown to be just fine, averting What Happened to the Mouse?.
When Johnny runs to Uncle Remus's cabin only to find that he's gone.