Sorry, the story just doesn’t hold together. According to left-wing think tanks, columnist and bloggers—and, of course, the Occupy Wall Street radicals—the top 1 percent have been exploiting the 99 percent for decades. The rich have been getting richer at the expense of the middle class and poor. Really? Just think for a second: If inequality had really exploded during the past 30 to 40 years, why did American politics simultaneously move rightward toward a greater embrace of free-market capitalism? Shouldn’t just the opposite have happened as beleaguered workers united and demanded a vastly expanded social safety net and sharply...