The political commentariat doesn't know what to make of those thousands of Americans who've spontaneously thronged to tea parties and town-hall meetings to oppose the big-government programs of the Obama administration and Democratic Congress. Some on the left attack them as fascists or racists, though evidence of that is sorely lacking. David Brooks in The New York Times compared them to the New Left campus radicals of the '70s, which comes closer but doesn't quite ring true. I think the tea partiers bear an uncanny resemblance to the antiwar activists in the Vietnam War period. Like the tea partiers, the...