The authors of Freakonomics relate an interesting story about the KKK after WWII. Wanting to combat the rise of the KKK, activist Stetson Kennedy went undercover and infiltrated the group. In attempt to discredit the organization and expose their covert practices, Kennedy gave the writers of the Superman radio drama detailed information about the workings of the KKK, including secret codewords and details of Klan rituals. The writers produced four episodes of the radio show chronicling the super hero fighting the Klan. The authors contend that the radio show episodes had a negative impact on the Klan and hastened it’s demise.