Murder had been declining in the United States in the two decades after the lethal Crack Wars of the late 1980-1990s. But then the Establishment decided about a decade ago that America’s big problem was too much law and order. So, after the celebrated emergence of Black Lives Matter at Ferguson in August 2014, we got less law and order, good and hard as H.L. Mencken might say about today’s elites. Culminating at the Dallas Police Massacre of July 2016, this led to the election of Donald Trump and the appointment of Jeff Sessions as Attorney General, which coincided with...