Conspiracies of Conspiracies: How Delusions Have Overrun America

It's tempting to think that we live in an unprecedentedly fertile age for conspiracy theories, with seemingly each churn of the news cycle bringing fresh manifestations of large-scale paranoia. But the sad fact is that these narratives of suspicion—and the delusional psychologies that fuel them—have been a constant presence in American life for nearly as long as there's been an America.

In this sweeping book, Thomas Milan Konda traces the country's obsession with conspiratorial thought from the early days of the republic to our own anxious moment. Conspiracies of Conspiracies details centuries of sinister speculations—from antisemitism and anti-Catholicism to UFOs and reptilian humanoids—and their often incendiary outcomes. 

Rather than simply rehashing the surface eccentricities of such theories, Konda draws from his unprecedented assemblage of conspiratorial writing to crack open the mindsets that lead people toward these self-sealing...