Democratic strongholds: the nation’s largest cities.
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President Obama has characterized income inequality as “the defining challenge of our time,” prodding Republicans to come up with “concrete plans” to reduce it.

However, a new study by the Brookings Institute shows that the highest levels of income inequality in the U.S. are found in Democratic strongholds: the nation’s largest cities.

In his Dec. 4, 2013 speech, “Remarks on Economic Mobility,” Obama praised the New Deal and the War on Poverty for building “the largest middle class the world has ever known,” and lamented “a dangerous and growing inequality and lack of upward mobility that has jeopardized middle-class America’s basic bargain – that if you work hard, you have a chance to get ahead.”