What was the mission of the ku klux klan?

To use the terminology of the times, meaning the years immediately after it's beginnings, the Klan's goal was to terrorize freed Blacks, prevent them from voting, and burn their churches. And to form lynching crews. The Klan also targeted any "White sympathizers", who tried to help Freed Blacks. Klan activity was based in the South. Later on, the Klan still existed, and the term Afro-Americans is best used to describe their main targets. The activities of the modern day Klan, up to about the early 1960's, was in line with past activities. Afro-American churches were burned, burning crosses were placed on the properties owned by Southern Afro-Americans.

To terrorize african americans