Special preview for BlacKkKlansman features the unreleased track "Mary Don't You Weep" by the late Prince. Video shows a compilation of footage from the film.

Ron Stallworth, an African-American police officer from Colorado, successfully manages to infiltrate the local Ku Klux Klan with the help of a white surrogate, who eventually becomes head of the local branch.

https://www.zerotrailers.com/movie/BlacKkKlansman/