By Andrew Lapin When Steve Dettelbach was confirmed last week as the director of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, he became the beleaguered bureau’s first head to pass a Senate confirmation in eight years. For some, the confirmation offered hope of a changing tide in America’s sea of mass shootings. But a county Republican group in Kentucky saw a different story: that Dettelbach is part of a “Jewish junta” that “is getting stronger and more aggressive.” The Bracken County Republican Party, representing a rural county with a population of around 8,400 along the Ohio River near...