The Ku Klux Klan was established in the southern states after the American Civil War. It was a secret organisation that targeted many African Americans, but also other groups such as Catholics and Jewish people.
The popularity of the KKK increased in 1915.
This revival was due in part to the film The Birth of a Nation, which showed the KKK protecting white families against groups of African Americans who threatened violence and rape.
The KKK had several core beliefs: