Ron Stallworth, the first African American officer on the Colorado Springs Police Force, answered an ad for the Ku Klux Klan in his local paper. He hoped to be added to a mailing list and have a chance to keep an eye on the local chapter of this terrorist group. Instead, he received a phone call and an invitation to be more personally involved. He recruited his white partner to pose as him for meetings and struck up phone contact with none other than David Duke himself. Stallworth’s several months-long undercover investigations exposed Klan members in the military, prevented cross burnings, and gave the police an in-depth understanding of the workings of this secretive organization.