Liberal filmmaker Michael Moore was an unwitting participant in a November anti-Trump rally that was allegedly organized by the Russians indicted last week for meddling in the 2016 presidential election.According to the indictment of 13 Russian nationals released Friday by U.S. Special Counsel Robert Mueller, the defendants and their co-conspirators tried to sow discord in the U.S. political system by organizing dueling rallies for and against then-President-elect Donald Trump in New York City on Nov. 12, 2016.One of those rallies, called “Trump is NOT my President,” was promoted on social media and MSNBC by Mr. Moore, who has routinely accused...