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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Vice President Joe Biden, left and President Barack Obama wait for their ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Jan. 21, 2013.
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People cheer on the National Mall during the ceremonial swearing-in ceremonies of U.S. President Barack Obama and Vice President Joe Biden on the West front of the U.S. Capitol, Jan. 21, 2013.
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A woman listens on the National Mall during the 57th inauguration ceremonies on the West front of the U.S. Capitol, Jan. 21, 2013.
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Spectators wave American flags on the National Mall in Washington, Jan. 21, 2013, before the start of President Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration.