No better symbol of the deep political and social divide over illegal immigration exists than here on the Mexico-U.S. border, along Glenn Spencer's rural desert property. And no better symbol exists of the contradictions and conundrums from an unresolved government enforcement policy.

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A tale of opposing views in Arizona

Data from the most recent census suggests that in the deep South, historically hostile to mixed-race couples, a shift in attitude is well under way.

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Race Remixed: Black and White and Married in the Deep South: A Shifting Image

Amazing views of the life that swims in the deep

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Ocean universe

Bosnians are set to vote in a general election after a campaign focusing on the deep ethnic divisions in the country.

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Divided Bosnians go to the polls