The Clansman

The Clansman: A Historical Romance of the Ku Klux Klan is a novel published in 1905. It was the second work in the Ku Klux Klan trilogy by Thomas Dixon Jr. that also included The Leopard's Spots and The Traitor. 

It presents the Ku Klux Klan heroically. The novel was twice notably adapted, immediately by its author as a highly successful play entitled The Clansman (1905), and a decade later by D. W. Griffith in the 1915 movie The Birth of a Nation.