Samuel Fuller

Klansman -- YouTube - Full movie (Flash)

Klansman -- An FBI Agent goes undercover in the Ku Klux Klan.

Harry Burk Jr. and the American ambassador are kidnapped by Colombian drug dealers seeking the release of some colleagues jailed in the U.S. Unfortunately for the hostages, the U.S. government refuses to get involved. Robert Duvall is hired as a mercenary to rescue the hostage.

A gritty tale of vengeance in which Robertson feigns loyalty to both the government (a federal crime commission) and organized crime in order to kill the men who murdered his father. This is one of Samuel Fuller's most visually striking films, based on a series of Saturday Evening Post articles, by Joseph F. Dineen.