Hundreds of thousands of people witnessed Monday's public inauguration ceremony on the National Mall in Washington, D.C.
The Second Inauguration of President Barack Obama
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President Barack Obama, L, is sworn-in for a second term by Supreme Court Chief of Justice John Roberts, R, during his public inauguration ceremony at the U.S. Capitol in Washington, D.C., Jan. 21, 2013, while wife Michelle (L-R) and daughters Sasha and Malia look on.
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Crowds of people gather on the mall to watch the swearing-in of U.S. President Barack Obama in Washington, January 21, 2013.
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Khongorzul Battsengel, left, and Ariunbolor Davaatsogt both from Mongolia, take a picture of themselves as they wait for President Barack Obama in the 57th Presidential Inaugural Parade on Pennsylvania Ave. in Washington D.C., Jan. 21, 2013.
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Spectators react on the National Mall during the 57th inauguration ceremonies for U.S. President Barack Obama and Vice President Joe Biden on the West front of the U.S. Capitol, in Washington, D.C., Jan. 21, 2013.