Joseph Stiglitz has some shocking numbers:
Nowadays, these numbers show that the American dream is a myth. There is less equality of opportunity in the United States today than there is in Europe – or, indeed, in any advanced industrial country for which there are data. This is one of the reasons that America has the highest level of inequality of any of the advanced countries – and its gap with the rest has been widening. In the “recovery” of 2009-2010, the top 1% of US income earners captured 93% of the income growth. Other inequality indicators – like wealth, health, and life expectancy – are as bad or even worse. The clear trend is one of concentration of income and wealth at the top, the hollowing out of the middle, and increasing poverty at the bottom.
This is troubling, but not merely for a sense of mathematical equality or even gut level justice. This is bad news because income disparity hurts people in predictable and demonstrable ways.