Over the last eight years, when the MSM was engaged in one, long Chimpy-Bush-Hitler-Darth Vader of a sneer, do you recall any liberal media member writing to complain of the coarsening of dialogue? Neither do I. But now that Barack Obama is occupying the White House, David Denby of the New Yorker has written “Snark.” Suddenly, it’s a shame we’re so sarcastic. Denby appeared on Tavis Smiley’s PBS show last night to lament the decline of civility. But the only politicians he cited as victims of over-the-top snarkiness were Democrats: Barack Obama, Hillary and Al Gore. At one point, it...