The Ku Klux Klan originated in the United States to promote white supremacy, white nationalism, and anti-immigration beliefs. In the 1920s, the KKK grew rapidly across the country by establishing a business model where new members paid fees to join. At its peak, the KKK had over 6 million members nationwide who used violence and intimidation tactics like cross burnings and lynchings to target African Americans, Catholics, Jews, and other minority groups they opposed.