According to QAnon, Trump will become the 19th president on March 4 because of a theory, also believed by the so-called sovereign citizen movement, that a law was secretly passed in 1871 that turned the U.S. into a corporation. As a result of this, all other presidents after Ulysses S. Grant are illegitimate, the theory goes.
Law enforcement in Washington D.C. said they are monitoring the potential threat of further violence as followers of the QAnon conspiracy theory eagerly await March 4.
Supporters of the radical movement, listed as an domestic terrorist threat by the FBI, believe that Donald Trump will once again be inaugurated as president next month.
There is no suggestion that the QAnon supporters are planning anything in particular, but both Capitol Police and the Metropolitan Police Department are keen not to have a repeat of the deadly January 6 attack, which conspiracy theorists took part in.
March 4 is the date that presidential inauguration ceremonies used to take place, before it was moved to January 20 in 1933 in order to shorten the lame-duck period.
Source: Police are prepping for March 4th
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.