Andrew Gelman considers the evidence:
A vast majority of Americans — including half of all self-identified Republicans — think there is “too much power in the hands of a few rich people and large corporations.” And a solid majority believes that “the country’s economic system unfairly favors the wealthy.” On the other hand, close to 60 percent of Americans do not see the country as “divided into haves and have-nots” and over 60 percent see “big government” as the biggest threat to the country in the future. What gives?
I think it’s fair to say that there’s enough here to support different political themes. A supporter of higher taxes for higher incomes can focus on the “too much power in the hands of the rich” angle, whereas a supporter of cuts in low-income and middle-income entitlement programs can focus on the lack of resonance of the haves and have-nots argument.