Conversation so far:
What happened to Medgar Evers?
Medgar Evers was assassinated in 1963 by Byron De La Beckwith, a member of the White Citizens' Council in Jackson, Mississippi.
Who normally was there for Medgar Evers?
What happened the day Medgar Evers died?
Medgar Evers and his wife Myrlie had trained their children on what to do in case of a shooting, bombing or other kind of attack on their lives.
What had Medgar Evers and his wife Myrlie trained their children for before the day of his assassination?
Medgar Evers arrived at his home on the morning of his death without an escort. None of his usual protection was present.
Why do people think Medgar Evers' usual protection was gone?
There has been speculation that many members of the police force at the time were members of the Ku Klux Klan.
What is the Ku Klux Klan?
The Ku Klux Klan, commonly called the KKK or the Klan, is an American white supremacist hate group, whose primary target is African Americans.

Question: What was this group?
Self-contained rewrite: What was the Ku Klux Klan?