"These days, however, I don't think the Magical Negro's existence is so
conscious. I hypothesize that the Magical Negro in film continues to live
because a lot of the less savory beliefs about race are still in the
American public's psyche. And because so much of art these days is
commercial, the great machine needs to "give 'em what they know." A good
example was how the plight of the character Dick Hallorann was altered in
the film version of The Shining; Hallorann was killed off in the film yet in
the book managed to escape with his life."
Stephen King's Super-Duper Magical Negroes
By Nnedi Okorafor-Mbachu
http://www.strangehorizons.com/2004/20041025/kinga.shtml 
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