the superman radio show was a big part in the decline of the Klan.

journalists had infiltrated the Klan and wanted to share their secrets but the press and cops weren't interested or safe to tell anti Klan stuff to. So thy went to the superman radio show who had superman fight the Klan on the show and included the klans real secret codes and rituals which made them look really silly undermining a lot of their support.

It's not a cool mystery to be included in for your average racist if their kid heard about it on the radio