A top news union’s organizing costs and some of its leaders’ outspoken left-leaning criticism of journalism are drawing a backlash from some unionized journalists at the New York Times, Reuters, and other newsrooms. The journalists have “effectively lost our voice, or any power, in our own union, the NewsGuild of New York,” the Reuters NewsGuild unit chair, Tim McLaughlin, wrote to Reuters union members earlier this month in a message shared with Semafor. He suggested a check on dues...