One of the best animated films I've seen come out of Disney was the Tarzan movie. I wasn't crazy about the story or the design on Tarzan's face, but the traditional animation was spectacular.
Racism springs from the lie that certain human beings are less than fully human. It's a self-centered falsehood that corrupts our minds into believing we are right to treat others as we would not want to be treated.
Dallas was a Black and White society at that time; it didn't have the diversity it has now.