The KKK took part in three distinct movements in the United States that have advocated extremist reactionary positions such as white supremacy, white nationalism, anti-immigration. It extended all over the U.S., especially in southern states by 1870. They worked with violence and threats (burning a cross in your front yard). They killed and hung many blacks, along with whites as well. The civil rights movement of the 1960s also saw a surge of Ku Klux Klan activity, including bombings of black schools and churches and violence against black and white activists in the South.
