CHARLOTTE, NC - SEPTEMBER 05:  First lady Michelle Obama greets San Antonio Mayor Julian Castro (C) and his brother Joaquin Castro during day two of the Democratic National Convention at Time Warner Cable Arena on September 5, 2012 in Charlotte, North Carolina. The DNC that will run through September 7, will nominate U.S. President Barack Obama as the Democratic presidential candidate. Photo: Streeter Lecka, Getty Images / 2012 Getty Images
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