Steven Pearlstein on inequality:
The biggest problem with runaway inequality, however, is that it undermines the unity of purpose necessary for any firm, or any nation, to thrive. People don't work hard, take risks and make sacrifices if they think the rewards will all flow to others. Conservative Republicans use this argument all the time in trying to justify lower tax rates for wealthy earners and investors, but they chose to ignore it when it comes to the incomes of everyone else.
It's no coincidence that polarization of income distribution in the United States coincides with a polarization of the political process. Just as income inequality has eroded any sense that we are all in this together, it has also eroded the political consensus necessary for effective government.