Mexico swears in president amid violent protests - Article Photos 38/54

Mexico's incoming President Enrique Pena Nieto spreads out his arms after being sworn in at the inauguration ceremony in National Congress, in Mexico City, Saturday, Dec. 1, 2012. Pena Nieto took 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 congressional chamber where he swore to protect the constitution and laws of the land. (AP Photo/Alexandre Meneghini)