The Klu Klux Klan.

The Klu Klux Klan is the most influential white supremacists group in the US and has existed for almost 150 years. Abbreviated to KKK, the Klu Klux Klan was established right after the end of the Civil War. By April 1867 it had already spread down to Nashville. Most of the leaders were leaders of the Confederate Army. The KKK's purpose was to keep segregation legal and to keep whites from mixing with black people. They claimed …

…he Second Era of the Klu Klux Klan, there have been 3 new, but weak, attempts to revive the Klan. Fortunately, they have all failed miserably and for the most part America is now Klan free. Although a resurgence of support for the Klan was manifest in the surprising popularity in the early 1990s of David Duke of Louisiana, actual membership in Klan organizations is estimated to be in the low thousands (www.infoplease.com.)