QAnon (AKA "Q") is a CIA psyop which masqueraded as an anonymous military intelligence person or group within President Trump's inner circle of advisers (the highest US intelligence clearance rank is Q). The purpose of QAnon is to neutralize opposition similar to "Operation Trust" which was a Bolshevik counter-intelligence operation run from 1921-1926.
Q began posting information on the 8-Chan bulletin board on the deep web in October 2017 but has switched to 4-Chan for ease of protecting his posts (the deep web is a wild west place). The information posted is mirrored to several web site on the World Wide Web, notably [http:/www.qmap.pub]. There are many interpreters of Q posts on YouTube and other websites. Among the best on YouTube are JustInformedTalk and PrayingMedic.
The MSM rag Time magazine listed Q as one of 25 Most Influential People on the Internet in 2018.  The group is said to be known by a slogan, "when we go one, we go all", often shortened to WWG1WGA.
Allegations of a conspiracy theory
Time magazine, not the even-handed publication it was many years ago, on June 28, 2018, listed Q among The 25 Most Influential People on the Internet.
The occasional Q post is authored by Q+, obviously an alternate in the intelligence circle, maybe Trump himself. A photo of the Q Team (one composition of Trump's legal team upon whom Q-anon and his readers have directed attention in order to protect) is available here .
Democrats become believers
After the firing of Jeff Sessions and appointment of Matthew Whitaker as Acting Attorney General, Whitaker relieved Rod Rosenstein of oversight of the Mueller probe. User:Sundance of theconservativetreehouse.com pleaded with readers to abandon discussing or retweeting Qanon's frequent use of the phrase, "trust the plan." Sundance posited that the Democratic-controlled House, which previously ridiculed and dismissed Qanon, would become firm believers and investigate Qanon postings to seek impeachment on grounds of obstruction of justice.
- QAnon is US Military Intelligence that recruited Trump for President to prevent Coup D’etat
- New York Magazine Intelligencer: “So Was QAnon … Right?", July 9, 2019.
- Schallhorn, Kaitlyn (August 3, 2018). What is QAnon, the conspiracy theory group showing up to Trump rallies? Fox News. Retrieved November 3, 2018.