The Anniston and Birmingham bus attacks, which occurred on May 14, 1961, in Anniston and Birmingham, both Alabama, were acts of mob violence targeted against civil rights activists protesting against racial segregation in the Southern United States. They were carried out by members of the Ku Klux Klan and the National States' Rights Party in coordination with the Birmingham Police Department. The FBI did nothing to prevent the attacks despite having foreknowledge of the plans.