President Obama's Second Inauguration (PHOTOS)

President Obama took the ceremonial oath of office for his second term on Monday, with an estimated 600,000 people traveling to the capital to watch. See photos.

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Obama Inauguration

President Obama took the ceremonial oath of office for his second term on Monday, with an estimated 600,000 people traveling to the capital to watch. See photos.

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President Barack Obama and first lady Michelle Obama wave to the crowd at The Inaugural Ball.

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Texas's Palmview High School Mariachi and Folkloric Group perform while passing the presidential box and the White House during the Inaugural parade.

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The Miami University, Ohio, Marching Band marching band performs.

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Mounted members of the military ride horses as the presidential inaugural parade winds through the nation's capital.

Charles Dharapak/AP

Barack and Michelle Obama wave as they walk down Pennsylvania Avenue during the Inauguration parade.

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Barack and Michele Obama (L), Army Major General Michael Linnington, Joe and Jill Biden place their hands over their hearts as they review the troops at the start of the inaugural parade.

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Barack Obama shares a moment with House Speaker John Boehner as first lady Michelle Obama applauds at the Inaugural Luncheon in Statuary Hall at the U.S. Capitol building.

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President Barack Obama (R) laughs with (L-R) Sen. Harry Reid, Sen. Lamar Alexander, and Sen. Chuck Schumer after signing a proclamation to commemorate the inauguration.

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Barack Obama and his wife Michelle leave after completing the oath of office.

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Addie Tucker, 5, of Atlanta, Georgia, holds on to David Tucker, 55, also of Atlanta, while watching the inauguration from the National Mall.

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Beyoncé performing the National Anthem at the inauguration ceremony.

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President Obama gives his inauguration address, highlighting the notion that "all men are created equal" and specifically calling out Martin Luther King, Jr.

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Barack Obama, takes the oath of office from Supreme Court Chief Justice John Roberts, right, as first lady Michelle Obama holds the Lincoln Bible and the traveling bible of slain civil rights leader Martin Luther King Jr. during the presidential inauguration.

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People cheer as on the National Mall during the Inauguration ceremony.

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Barack Obama (C) pauses with his escorts before the start of the presidential swearing-in ceremony.

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Joe Biden arriving at the swearing in ceremony.

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Former President Jimmy Carter, Secretary of State Hillary Clinton, and former President Bill Clinton arrive at the inauguration ceremony at the Capitol.

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First lady Michelle Obama and daughters Sasha and Malia arrive for the presidential inauguration.

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Katy Perry attending the inauguration ceremony at the Capitol.

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Jay-Z and Beyonce arrive at the presidential inauguration.

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President Barack Obama, waves as he walks with his daughters Sasha and Malia, first lady Michelle Obama and mother-in-law Marian Robinson, to St. John's Church in Washington.

Chris Kleponis/Reuters, via Landov

President Obama arrives back at the White House with first lady Michelle Obama and her mother, Marian Robinson, after attending service at St. John's Episcopal Church on Monday.

Khue Bui for Newsweek

US Coast Guard personnel stand post at the U.S. Capitol at dawn prior to the inaugural ceremony.

Brian Cassella, Chicago Tribune/MCT, via Getty

The sun rises Monday, Jan. 21, 2013 before the ceremonial inauguration of President Barack Obama at the U.S. Capitol in Washington, D.C.