QAnon[a] (/kjuːəˈnɒn/) is a far-right conspiracy theory[2][3][4][5][6][7] alleging that a cabal of Satan-worshiping pedophiles running a global child sex-trafficking ring is plotting against President Donald Trump, who is battling them,[8] leading to a "day of reckoning" involving the mass arrest of journalists and politicians.[9] No part of the theory is based on fact.[10][11][12][13]
The theory began with an October 2017 post on the anonymous imageboard 4chan by "Q", who was presumably an American individual,[14] but probably became a group of people.[15][16] Q claimed to have access to classified information involving the Trump administration and its opponents in the United States. NBC News found that three people took the original Q post and expanded it across multiple media platforms to build internet followings for profit. QAnon was preceded by several similar anonymous 4chan posters, such as FBIAnon, HLIAnon (High-Level Insider), CIAAnon, and WH Insider Anon.[17]