In today’s political climate, conspiracy theories are commonplace. But they’re nothing new. In the 1960s, the John Birch Society built a movement around them.

If you look me up in Wikipedia, it starts off - G ... (SOUNDBITE OF TV SHOW, "MISTER ROGERS' NEIGHBORHOOD") FRANCOIS SCARBOROUGH CLEMMONS: (As Officer Clemmons) That looks awfully enjoyable ...

This story was produced by Nellie Gilles of Radio Diaries, and edited by Deborah George, Ben Shapiro and Joe Richman. You can ...