The Ku Klux Klan, often abbreviated as the KKK, is a white supremacist hate group that has a long and dark history in the United States. The KKK was founded in 1865 in Pulaski, Tennessee following the Civil War. The group initially started as a social club for Confederate veterans, but it quickly evolved into a violent terrorist organization that sought to intimidate and oppress African Americans and other minority groups.

The KKK is best known for its use of intimidation, violence, and terrorism against African Americans, as well as against other groups such as immigrants, Catholics, Jews, and progressive political activists. Klan members wore white robes and hoods to conceal their identities and to strike fear into their victims.

During the Reconstruction era following the Civil War, the KKK sought to prevent African Americans from exercising their newly gained rights and freedoms by using tactics such as lynching, burning crosses, and engaging in voter suppression. The KKK's reign of terror resulted in the deaths of thousands of African Americans and subjected many more to horrific acts of violence.

Although the KKK experienced a decline in membership and influence in the mid-20th century, the organization still exists today in various forms and continues to promote white supremacy, racism, and hate. The legacy of the KKK serves as a stark reminder of the enduring struggle for racial equality and justice in America.