The decision to move their remains was decided last year after the Sons of Confederate Veterans, a non-profit organization of male descendants of Confederate veterans, agreed to drop a pending lawsuit against park owners, according to CNN affiliate WREG.Forrest, who was a slave trader and early Ku Klux Klan leader, and his wife, Mary Ann, had their graves at Health Sciences Park, where a monument to Forrest used to be. The work to remove the remains started Tuesday morning and