Several members of KKK groups were convicted of murder in the deaths of civil rights workers in Mississippi in 1964 and children in the bombing of the 16th Street Baptist Church in Birmingham in 1963.
As of 2016, researchers estimate that there are just over 30 active Klan groups exist in the United States, A cartoon threatening that the KKK will lynch scalawags (left) and carpetbaggers (right) on March 4, 1869, the day President Grant takes office.
The national headquarters made its profit through a monopoly of costume sales, while the organizers were paid through initiation fees.
It grew rapidly nationwide at a time of prosperity.
Its official rhetoric focused on the threat of the Catholic Church, using anti-Catholicism and nativism.
The second Klan was a formal fraternal organization, with a national and state structure.
This second organization adopted a standard white costume and used code words which were similar to those used by the first Klan, while adding cross burnings and mass parades to intimidate others.
It rapidly declined in the later half of the 1920s.
The third and current manifestation of the KKK emerged after World War II, in the form of localized and isolated groups that use the KKK name.
They have focused on opposition to the Civil Rights Movement, often using violence and murder to suppress activists.
It is classified as a hate group by the Anti-Defamation League and the Southern Poverty Law Center.