Published online by Cambridge University Press: 13 February 2006
American society has witnessed an extraordinary widening of economic inequality in the period since World War II that is unmatched among advanced industrialized countries. In 2003, the most affluent fifth received 47.6% of family income, the middle class (the third and fourth fifths) earned 15.5% and 23.3%, respectively, while the bottom two quintiles each received less than 10%. (Twenty-one percent of family income went to the top 5%.) In other words, the richest 20% obtained nearly half of the country's income. That income (and wealth) is unevenly distributed is neither new nor necessarily disturbing. What is remarkable is the large and unmistakable increase in the concentration of income at the top (Mishel, Bernstein, and Allegretto 2005).