We're talking about the profound wealth disparity between women of color and their white peers.

NPR: Women Of Color Lag Behind In Wealth

And while the bitterness also comes from basic psychology operating in an economy with a growing wealth disparity, it is more complicated.

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There is less wealth disparity among the top college basketball teams than the top football teams mainly because television money is more evenly distributed in basketball.

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Although a comparable disparity in wealth existed before 2007 there was not this level of discussion.

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The disparity in wealth, language, and culture across countries raises a number of hurdles.

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The growing disparity in wealth made the great recession worse and the recovery weaker than ever before.

FORBES: The Wealthiest 20% Own 72%; The Poorest 20% Only 3%

There may be other factors as well: overall poverty, disparity of wealth, the presence and proportion of and relationships among various ethnic groups, and perhaps some measure of social stability like church attendance.

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Signing a legal document of this type could be helpful if the couple owns substantial assets or if there is a wide disparity in income or wealth between the two members of the couple.

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The distribution of wealth inequality is far worse than the disparity in incomes.

FORBES: The Wealthiest 20% Own 72%; The Poorest 20% Only 3%