As any author would say upon seeing the film adaptation of his work, “Where the hell did my book go?” Thomas Dixon wrote The Clansman in 1905. I’m sure he thought D.W. Griffith changed it beyond all recognition when he made The Birth of a Nation in 1915 (although he got “points” from the movie and it made him a millionaire).
It’s not a problem that can’t be overcome by bald-faced lies. I already pointed out that The Patriot was willing to invent a plantation owner who didn’t own any slaves. And 300 was able to portray Sparta as a land of freedom. So just have a scene in our 2007 remake where Ben Cameron (played by Matt Damon) denounces the Klan as a bunch of terrorists who are giving real Southerners a bad name. And give him a older black man as a father figure (a good role for Morgan Freeman) who gives him advice. Sure, Al Sharpton and Spike Lee will denounce it but the audience will eat it up.
There were plantations in the South that did not have slaves.
Carville Earle, “Beyond the Appalachians, 1850–1860”, in Thomas F. McIlwraith and Edward K. Muller (eds.), North America: The Historical Geography of a Changing Continent, 2nd ed., p. 182:
There’s also the option nobody’s discussing: Make it straight and honest and realize you’re only going to sell it to the kind of nutjobs who keep White Power and Aryan Nation businesses alive. The fact there are White Power and Aryan Nation businesses tells you this could be a profitable enterprise if your remake is done cheaply enough.