This Adventure of Superman radio show features a classic story of Superman facing down the KKK. This is a story with deep roots to Florida. Stetson Kennedy, a native of Jacksonville and writer and human rights activists is credited for inspiring the Superman radio show to produce this serial in 1946. There is some debate about how much undercover work he did to write I Rode With the Klan (later republished as The Klan Unmasked). You can find out more about that here. What is clear is that Kennedy was a lifelong opponent to racism and promoted social justice. Whatever the origins of the investigative work here, the effect of the Superman radio program to undermine the KKK in these years is clear.