Mexico swears in president amid violent protests

In this image released by the press office of president-elect Enrique Pena Nieto on Saturday Dec. 1, 2012, Mexico's outgoing president, Felipe Calderon, left, gives a Mexican flag to president-elect Enrique Pena Nieto during the official transfer of command ceremony at the National Palace in Mexico City, Saturday Dec. 1, 2012. Pena Nieto will be officially sworn in as Mexico's new President during a ceremony at the National Congress later on Saturday. (AP Photo/Press Office of president-elect Enrique Pena Nieto)Enrique Pena Nieto headed to Congress to take the oath of office as Mexico's new president on Saturday, bringing the old ruling party back to power after a 12-year hiatus amid protests inside and outside the chamber where he was to be sworn in.