The verdicts, coming after seven days of deliberations in U.S. District Court in Washington, were a major blow against one of the country’s most notorious far-right groups and another milestone in the Justice Department’s vast investigation of the Capitol attack. The fifth defendant in the case, Dominic Pezzola, was found not guilty on the sedition charges, although he was convicted of other serious felonies. Four members of the Proud Boys, including their former leader Enrique Tarrio, were convicted Thursday of seditious conspiracy for plotting to keep President Donald Trump in power after his election defeat by leading a violent mob...