A supporter of President Donald Trump holds an U.S. flag with a reference to QAnon during a Trump 2020 Labor Day cruise rally in Portland, Ore., Sept. 7, 2020. For nearly three years, QAnon followers have been feverishly deciphering thousands of cryptic clues and predictions posted online by the shadowy persona of "Q" at the center of a metastasizing movement that experts say is the first far-righ