When did the Klu Klux Klan begin?

The Ku Klux Klan started in Pulaski, Tennessee, in May, 1866 after the Civil War with a group of white Southerners who were very angry when the war ended. They were angry because the Blacks had won their freedom from slavery and they had lost their slaves. Richard R. Reed suggested the word kuklos, meaning circle and cycle then Captain John B. Kennedy, who had an ear for alliteration, added the word Clan. After some tinkering the group came up with the name Ku Klux Klan.