Politicians typically talk about rising inequality and the sluggish recovery as separate phenomena, when they are in fact intertwined. Inequality stifles, restrains and holds back our growth. When even the free-market-oriented magazine The Economist argues — as it did in a special feature in October — that the magnitude and nature of the country’s inequality represent a serious threat to America, we should know that something has gone horribly wrong. ... There are four major reasons inequality is squelching our recovery. The most immediate is that our middle class is too weak to support the consumer spending that has historically...