The 51-year-old woman believed the president had traced the shape of the letter “Q” with his fingers as a covert signal to followers of QAnon, a right-wing, pro-Trump conspiracy theory.
University of California, Davis history professor Kathryn Olmsted, author of a book called “Real Enemies: Conspiracy Theories and American Democracy, World War I to 9/11,” said it's unclear whether QAnon has attracted more believers than other conspiracy theories that have intersected with U.S. politics.
“What's different now is that there are people in power who are spreading this conspiracy theory,” she said, adding that Trump's conspiracy-minded rhetoric seems to fire up part of his base.
Travis View, a conspiracy theory researcher who co-hosts The QAnon Anonymous Podcast and has written about QAnon for the Washington Post under his pseudonym, said the sense of community forged by QAnon believers has helped it endure beyond the life span of other conspiracy theories.
Pizzagate and other far-right conspiracy theories have faded, but experts see no end in sight to QAnon's popularity.