Pena Nieto sworn in as Mexican president during inauguration ceremony

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Mexican President Enrique Pena Nieto arrives at the Mexican Congress to take the oath of office.
- [/AFP/Getty Images]
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Mexican President Enrique Pena Nieto speaks after taking the oath of office.
- [/AFP/Getty Images]
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Mexican President Enrique Pena Nieto shakes hands with his predecessor, Felipe Calderon.
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Mexican President Enrique Pena Nieto shakes hands with congressmen after taking the oath of office.
- [/AFP/Getty Images]
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Members of the left-wing Democratic Revolutionary Party stage a protest inside Congress before Enrique Pena Nieto of the Institutional Revolutionary Party is sworn in as Mexico's new president.
- [/AFP/Getty Images]
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Police try to stop demonstrators from pushing down a security fence surrounding the Mexican Congress where Enrique Pena Nieto was sworn in as president today.
- [/AFP/Getty Images]
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Police extinguish Molotov cocktails thrown by anti-Pena Nieto protesters ahead of the presidential inauguration ceremony.
- [/AFP/Getty Images]
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A man shows a picture on his phone of Mexican President Enrique Pena Nieto who took the oath of office today.
- [/AFP/Getty Images]

Enrique Pena Nieto of the Institutional Revolutionary Party was sworn in as Mexico's new president today amid protests inside and outside the Congress in Mexico City.

Members of the leftist Democratic Revolutionary Party staged a demonstration inside the Congress while anti-Pena Nieto protests clashed with police outside the building.

Shortly before the inauguration ceremony, Pena Nieto tweeted: "Mexico is a big country and today we need to be united together."

"In the following years we must work for Mexico. Let's leave the divisions and move forward together."