Hours after the Virginia Tech massacre, Barack Obama spoke at a campaign stop in Milwaukee. Obama could have shown compassion unalloyed with politics, what one hopes to find in a leader when disaster strikes. But he didn't. In the grand tradition of leftist orators, Obama repackaged the awful news of the day to "reflect" on his own political themes. "I hope," the candidate said about the massacre, "that it causes us to reflect a little more broadly on the degree to which we do accept violence in various forms all the time in our society: we glorify it, we encourage...