Income Inequality in the US

"Hacker and Pierson refreshingly break free from the conceit that skyrocketing inequality is a natural consequence of market forces and argue instead that it is the result of public policies that have concentrated and amplified the effects of the economic transformation and directed its gains exclusively toward the wealthy. Since the late 1970s, a number of important policy changes have tilted the economic playing field toward the rich. Congress has cut tax rates on high incomes repeatedly and has relaxed the tax treatment of capital gains and other investment income, resulting in windfall profits for the wealthiest Americans." (thanks Julie)