Out of sight but not forgotten, the John Birch Society is a husk of its old self. Still, its penchant for conspiracy theories courses in the veins of the American right. A mere 37% of Republicans believe Joe Biden beat Donald Trump legitimately. “January 6, I think, is probably second only to the 2020 election as the biggest scam in my lifetime,” says Tucker Carlson, the face of Fox News. Back in the day, the society trashed Dwight D Eisenhower and his successor as president, John F Kennedy. That Ike and JFK were war heroes made no difference. They were...