"[T]o frame the issue as income inequality is to lump together different issues that are not especially related. What we call "inequality" is caused by two different constellations of problems. At the top end, there is the growing wealth of the top 5 percent of workers...At the bottom end, there is a growing class of people stuck on the margins, generation after generation. This is caused by high dropout rates, the disappearance of low-skill jobs, breakdown in family structures and so on." David Brooks in The New York Times.