In the 1940s, Superman had already punched Hitler in the jaw and drop-kicked some fascism out of the atmosphere. So when he needed a new villain to laser-eye into oblivion, along came the worst costume party in history: the Ku Klux Klan.

Enter Stetson Kennedy: a real-life badass who infiltrated the Klan without heat vision or the ability to fly. With a notebook full of racist nonsense, he handed the writers of the Adventures of Superman radio show all the dirt they needed.

The result? The “Clan of the Fiery Cross” radio series, where Superman takes off his glasses and absolutely embarrasses the KKK on national radio.

Watch this video and discover how the Man of Steel proved you don’t need kryptonite to take down hate… just need a microphone and the moral clarity of a dude in red undies.