One of the controversies regarding the film was the casting of white actress Jeanne Crane to play the title role. Black actress Lena Horne had wanted the part, but having a white actress as Pinky with audience appeal and monetary pull led to the casting of Miss Crane. (In my opinion, since the actress had to be white, I would have chosen Jennifer Jones. She could have more realistically passed for black, again, just my opinion.)
Anyway, here's another interesting fact about the movie from Turner Classic Movies:
[A] major change in the production of Pinky was the director. [Director] John Ford left the film after only a week of shooting that was so traumatic [black co-star] Ethel Waters described it as a "shock treatment", with Ford's abrasive personality making her "almost have a stroke". [Producer] Zanuck was unhappy with the rushes he saw.
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