"FILE - In this Oct. 6, 2011 file photo, Carol Gay, of Brick, N.J., holds a sign saying ""Tax the Rich,"" as several groups including the Peoples Uprisings, October 2011 Coalition, and Occupy DC, ""occupy"" Freedom Plaza in Washington. The income gap between the rich and everyone else is large and getting larger, while middle-class incomes stagnate. That's raised concerns that the nation's middle class isn't sharing in economic growth as it has in the past. And it sparked the Wall Street protests that spread to other cities in the country. (AP Photo/Jacquelyn Martin, File)"