The widening gulf between the rich and everyone else is a growing source of tension in America.
A new survey from the Pew Research Center finds the income gap is now seen as a bigger source of conflict in the U.S. than race, age or national origin. That's why some believe the issue could matter in the presidential campaign, and others worry it could warp the national debate.
Two out of three Americans now perceive strong social conflicts over the income gap — up sharply from two years ago. Paul Taylor of the Pew Research Center has an idea what's behind the increase.