Between September 1964 and April 1971, the Federal Bureau of Investigation conducted a domestic covert action program named COINTELPRO-WHITE HATE. This counterintelligence program endeavored to discredit, disrupt, and vitiate the Ku Klux Klan and other white supremacist vigilante organizations. While historians are quite familiar with the FBI's efforts to nurture anticommunism and to discredit civil rights and leftist movements, the FBI's role in discrediting KKK groups in the American South during the late 1960s has not been systematically assessed. This article provides an analysis of the first aspect of this three-pronged attack. It describes how the FBI secretly coordinated efforts to discredit Klan organizations before local Southern communities that continued to tolerate vigilante violence. Intelligence information on Klan activities, provided discretely by the FBI to liberal Southern journalists, politicians and other molders of public opinion, helped those white Southerners who were opposed to Ku Klux Klan activity to transform their private dismay into public rebuke and criminal prosecutions. The article also analyzes corresponding COINTELPRO operations that discredited Ku Klux Klan leaders before rank-and-file Klan members. FBI agents and their clandestine informants circulated discrediting information about KKK leaders among rank and file Klan members, inculcating disillusionment among Klansmen and prompting resignations from Klan organizations.