AP Photo

From charisma to populism—this is the slippery slope down which Barack Obama has been sliding over the past two years. In June 2008, Obama the candidate described his nomination as “the moment when .  .  . our planet began to heal.” In June 2010, Obama the president promised his partisans he would find an “ass to kick.” 

With the peculiar magic of his presidential campaign now a faded memory, Obama is shoring up support by the cruder method of divisive appeals. Long before the current (already hugely extended) campaign season began, Obama made it a practice to target opposition symbols (“the insurance industry,” “speculators,” “a bunch of fat cat bankers on Wall Street,”...