Paul Krugman can’t understand why people would oppose government control of health care — or skyrocketing deficits, or a federal takeover of education, energy, and finance along with health care — unless they’re driven by racism. But he’s not the only one who sees racists under every bed. . . . It cannot be the case that every parody of a president who happens to be black is racist. And it is not good for democracy to try to counter every opposing argument with such a blood libel. The good news for advocates of limited government is that our opponents are displaying a striking lack of confidence in the actual arguments for their proposals. If they thought they could win a debate on nationalizing health care, or running trillion-dollar deficits, they wouldn’t need to reach for such smears.