Barack Obama’s tacky, hyperpartisan post-presidency is welcome insofar as it serves to remind the public of his tacky, hyperpartisan leadership style. “Although we don’t yet have the details about the motives behind last night’s shooting at the White House Correspondents’ Dinner.?.?. ,” began Obama’s Sunday evening statement about the gunman who showed up in Washington the night before. Except by the time Obama got around to acknowledging the attack, the entire world knew why Cole Tomas Allen had attempted to storm the ballroom where President Trump and much of his administration were breaking bread with their ancestral enemies in the...