Article Photos: Mexico swears in president amid violent protests 52/54

Enrique Pena Nieto, left, receives the presidential sash from Jesus Murillo Karam, president of the lower house, during the presidential inauguration ceremony at the 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)