Originally published on Thu January 2, 2014 6:18 pm
The widening gap between the rich and poor in the U.S. has become a central touch point for economists, pundits and politicians across the U.S. New York City's newly sworn-in mayor, Bill deBlasio, was elected after campaigning against a city divided between the haves and have-nots. President Obama has called tackling inequality the defining challenge of our time, saying that growing inequality and a lack of upward mobility jeopardizes the American dream. But what, exactly, is income inequality? Audie Cornish puts that question to Drew DeSilver, a senior writer for the Pew Research Center's Fact Tank blog.