Ku Klux Klan in Gone with the Wind is portrayed in a positive way. The novel talks of how slavery is depicted as being all simple. Slaves are portrayed as normal employees and are well awarded if they are loyal to their masters. You can go to http://www.sparknotes.com/film/gonewiththewind/section4.rhtml for more reference.
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The most controversial aspect of Gone With the Wind is the film’s depiction of race relations. Though freed from the novel’s positive portrayal of the Ku Klux Klan, Gone With the Wind’s depiction of slavery remains decidedly simplistic. Adopting historian U. B. Phillip’s “plantation school” view of the institution, the film shows slaves as well-treated, blindly cheerful “darkies” loyal to their benevolent masters. Slaves are portrayed as normal employees, are rewarded with presents like the master’s pocket watch if they’ve been appropriately loyal, and are allowed to scold the young mistress of the house as if they were a part of the family. Big Sam leaves Tara only when ordered and with extreme reluctance and later saves Scarlett at serious risk to his own life.