A US federal judge has refused to dismiss an indictment charging four alleged leaders of the far-right Proud Boys with conspiring to attack the US Capitol to stop Congress from certifying President Joe Biden's electoral victory. District Judge Timothy Kelly on Tuesday rejected defence lawyers' arguments that the four men -- Ethan Nordean, Joseph Biggs, Zachary Rehl and Charles Donohoe -- are charged with conduct that is protected by the First Amendment right to free speech. Kelly said the defendants had many non-violent ways to express their opinions about the 2020 presidential election. "Defendants are not, as they argue, charged...