AP In 1979, the same year Spike Lee's powerful new film "BlacKkKlansman" is set, Dick Lehr signed up to join the Ku Klux Klan. At a secret meeting, Lehr even met the Grand Wizard David Duke himself and watched a screening of "The Birth of a Nation," a few short months after becoming a Klansman. He infiltrated the KKK to prove that Duke's pro-white nonsense was nothing but a transparently perverse message of racism and white supremacy. Spike Lee's powerful new film, "BlacKkKlansman," tells the true story of Ron Stallworth, an African-American police officer who infiltrates a local branch the Ku Klux Klan in 1979.See the rest of the story at Business InsiderNOW WATCH: What's going on with Elon MuskSee Also:Jim Crow's northern history proves that white supremacy is not unique to the southern US5 times Putin has undermined the truth and taken action against those who have challenged himPoliticians paint China as the villain who will 'rip off American jobs and industries' — but Beijing isn't the problemSEE ALSO: I was an undercover CIA agent for 10 years — and it's not what it looks like in the movies SEE ALSO: I am the DEA agent responsible for catching the notorious Mexican drug lord ‘El Chapo’ — this is how we successfully carried out our undercover operation SEE ALSO: A police officer posed as a Burger King worker for 2 months to try to bust drug dealers — and people are furious