When filmmaker D.W. Griffith released Birth of a Nation in 1915, the revolutionary film changed the way America thought about the movies, and in many respects launched the modern film industry. But lesser known is the role Birth of a Nation had in the rebirth of the Ku Klux Klan. Long eradicated, the Klan was relaunched alongside the film and rode its wave to grow to millions of members.

Pictures, sources, credits and more are at www.southernhollows.com/episodes/birthofanation.