The FBI has named some of America's wildest and most troubling conspiracy theories as serious national security threats, citing various violent events in recent years as evidence.

The internal intelligence bulletin, first reported by Yahoo News, was written by the agency's Phoenix bureau and is dated May 2019. It names known conspiracy theories which have gained media traction in recent years as sources of domestic terrorism and extremism: the QAnon movement, Pizzagate, the "Zionist Occupation Government" theory believed broadly by white supremacists, the Sandy Hook "Crisis Actor" theory, and the New World Order conspiracies, among other fringe movements.

"The FBI assesses anti-government, identity based, and fringe political conspiracy theories very likely motivate domestic extremists, wholly or in part, to engage in criminal or violent activity," says the report, blaming the "modern information marketplace, occasionally driving both groups and individual extremists" to become violent.