Conservatives are grabbing popcorn and lining up to catch a new historical drama with modern connections. “Copperhead,” the new film from director Ron Maxwell, focuses on the Northern opponents of the American Civil War and stars Billy Campbell, Angus MacFadyen and Peter Fonda. At least one conservative — Richard Viguerie, chairman of ConservativeHQ.com — emailed his audience to tell it about the movie “that every conservative needs to see.” “[W]hile Copperhead is about the Civil War, believe me, it will hit close to home for every conservative fighting to preserve our Constitution and our American way of life,” Viguerie wrote....