That time Superman fought the KKK

I consider this one of the finest moments in the Man of Steel's history. Allow this comment to explain:

Back in 1946, the series delivered a powerful blow against the Ku Klux Klan's prospects in the northern USA. The human rights activist Stetson Kennedy infiltrated the KKK and other racist/terrorist groups. Concerned that the organization had links to the government and police forces, Kennedy decided to use his findings to strike at the Klan in a different way. He contacted the producers of the Superman radio show and proposed a story where the superhero battles the Klan. Looking for new villains, the producers eagerly agreed. To that end, he provided information -- including secret codewords and details of Klan rituals -- to the writers. The result was a mini-series of 16 episodes, "The Clan of the Fiery Cross," in which Superman took on the Klan. Kennedy intended to strip away the Klan's mystique. The trivialization of the Klan's rituals and codewords had a negative impact on Klan recruiting and membership.

Is that awesome or what?

They recently did a comic adaptation titled "Superman Smashes the Klan", which I actually purchased just today. It's really really good. Highly recommend it. :D