QAnon is a series of conspiracy theories centered around an anonymous figure, “Q,” who claimed to be a senior government official that has provided cryptic messages about the Trump administration and its enemies. One of its central claims is that Trump had secretly been working to remove a cabal of Democratic pedophiles from government, which shares likeness to the debunked Pizzagate conspiracy. Many of its assertions have been proven to be false, and the FBI has determined that it could pose a domestic terrorism threat. Nevertheless, Trump and his campaign have repeatedly lent credibility to QAnon by featuring its followers on Twitter and at rallies.

Into 2020, Trump refused to condemn or disavow the conspiracy theory, saying he didn’t know much about it except that believers supported him.

Q-Anon has been linked to Russian organizations working to amplify disinformation.

Business Insider – A Trump campaign ad featured QAnon signs weeks after the FBI warned conspiracy theories are a domestic terrorism threat
Business Insider – Trump just retweeted a ‘QAnon’ conspiracy-theory hashtag to his 68 million followers
The Washington Post – Hours after an FBI warning about QAnon is published, a QAnon slogan turns up at a Trump rally
Reuters – Russian-backed organizations amplifying QAnon conspiracy theories, researchers say
Wikipedia – QAnon