Mexican federal police in riot gear are seen through openings of a steel barrier outside the National Congress, just hours before Mexico’s new president was to take the oath of office in Mexico City, Saturday, Dec. 1, 2012. Hundreds of protesters opposed to new Mexican President Enrique Pena Nieto banged on the steel security barriers around Congress, threw rocks, bottle rockets and firecrackers at police and yelled “Mexico without PRI!” Pena Nieto took power at midnight in a symbolic ceremony and formally took the oath of office Saturday morning in congressional chambers. (AP Photo/Marco Ugarte)
