The John Birch Society is one of the most extreme right-wing groups in American history. It has strongly influenced libertarian and Republican politics since its founding in 1958. Dr. Matthew Dallek tells us the story of the Society’s founding, growth, and impact on American life. We discuss his new book, “Birchers: How the John Birch Society Radicalized the American Right.” Brutal history, but essential to know. Episode 502.