Task: Text Categorization
Input (English): This organization was responsible for a raid against the Elduyens, and some of its activities were made illegal by a Force Act. Thomas E. Watson was instrumental in leading its reformation, and a trial in Meridian convicted several members of this organization for the murders of Schwerner, Chaney, and Goodman. This organization met after the death of Mary Phagan at Stone Mountain, while coverage of an event it held led to the case Brandenburg v. Ohio. The Birth of a Nation glorified this group, and members from it bombed the 16th Street Baptist Church. For 10 points, identify this organization first led by Nathan Bedford Forrest which heavily opposed the Reconstruction and whose members wore white.
Output (English): History