The documentary Inequality for All is finally available on DVD. You really ought to watch it. Inequality is a feature-length explanation of the American problem of income inequality, as explained by economist (and former secretary of labor) Robert Reich. As an introduction to the sorry state of American economics—that is to say, as an answer to the question, "Why is the economy supposedly improving when everybody I know can barely make a living?"—it's about as clearly stated as it possibly can be. The film explains where the money went and how inequality came to be so pervasive. It uses Reich's considerable gifts as an educator to provide a crash course in everything that's wrong with the economy.
If you've already read Aftershock, you can rest easy knowing that you missed nothing of importance in Inequality for All. If you've watched Inequality, you'd be better off digging deeper into other economic books than reading Aftershock. This is too important for you to remain ignorant of Reich's theories for any longer. You only need to experience one of these texts to understand where Reich is coming from, but you definitely need to introduce yourself to Reich's teachings somehow. Choose one.