Mark Thoma of Economist’s View writes in the Fiscal Times (excerpt):
Income Inequality Is Hobbling the Middle Class
Income inequality in the U.S. has been rising for the last several decades, and with it concern about the consequences. For example, to what extent does the large flow of income into the hands of financial executives give them the power to influence Congress through campaign donations? How does this have an impact on the willingness of legislators to impose regulations that would stabilize the financial system but inhibit the ability of the financial industry to make the huge profits that fund political campaigns?
If economic mobility increased along with the increase in inequality, then this would at least partially offset the worries associated with the rising concentration of income...