David Moss at Harvard Business School, for instance, found that the rate of American bank failures was highly correlated with the level of inequality.

ECONOMIST: Less inequality does not need to mean less efficiency

The same applies to inequality at the world level.

ECONOMIST: Letters

That the level of inequality before Thatcher was correct and therefore a rise is a bad thing, and also on what I consider to be measurement errors in that inequality that does exist.

FORBES: The Economic Legacy Of Margaret Thatcher

That fall to 0.34 may not sound like much, but it takes the level of inequality back to where it was in the late 1990s - and it occurred in a year in which average household incomes went back to where they had been in 2004-05.

BBC: Britain's recession: Harsh but fair?

Economic inequality is at the highest level since the eve of the Great Depression.

FORBES: Why we Should Raise Taxes on the Rich (Debate Recap)

Such redistribution is urgently needed, in their view, because of the high level of social inequality and poverty in Russia today.

FORBES: Rich Russians Also Lament New Tax Hikes

That's an astonishing figure, and it is the highest level of income inequality since the beginning of the Great Depression in 1929.

CNN: Clinton's November 19, 2007, speech on economic challenges

Say what you like about the Occupy Wall Street demonstrations, but they have elevated the conversation about inequality in America to a level that no one else has done.

WSJ: Should a Charity Be Like a Business?

He has named the first black judge to the Supreme Court and appointed a cabinet-level advisor on racial inequality.

ECONOMIST: Race in Brazil

The Gini index, which measures inequality between the social classes, went from a pre-tax level of 0.402 when Carter took the helm in January 1977, to a slightly worse 0.406, according to the U.S. Census Bureau.

FORBES: Which Political Party Is Best For Social Equality...And The Stock Market?