"The fact that the rich are getting both relatively and absolutely richer, and the poor are getting relatively (if not absolutely) poorer, in the United States today is abundantly clear to all—although the true extent of this trend defies the imagination. Over the years 1950 to 1970, for each additional dollar made by those in the bottom 90 percent of income earners, those in the top 0.01 percent received an additional $162. In contrast, from 1990 to 2002, for every added dollar made by those in the bottom 90 percent, those in the uppermost 0.01 percent (today around 14,000 households) made an additional $18,000.
Nevertheless, a considerable portion of the population still seems willing to accept substantial differentials in economic rewards on the assumption that these represent returns to merit and that all children have a fighting chance to rise to the top. The United States, the received wisdom tells us, is still the “land of opportunity.” The new data on class mobility, however, indicate that this is far from the case and that the barriers separating classes are hardening. "
Aspects of Class in the United States: An Introduction, por John Bellamy Foster na Monthly Review