The Ku Klux Klan (), commonly shortened to the KKK or the Klan, is the name of an American white supremacist, far-right terrorist organization and hate group. Various historians, including Fergus Bordewich, have characterized the Klan as America's first terrorist group. There have been three distinct iterations with various targets relative to time and place, including African Americans, Jews, and Catholics. Each iteration of the Klan is defined by non-overlapping time periods, comprising local chapters with little or no central direction.
https://en.wikipedia.org/wiki/Ku_Klux_Klan