A man rides his bicycle in front of Mexican police officers in the Mexican Senate on December 5, 2013, in Mexico City, as supporters of Mexico's leftist leader Andres Manuel Lopez Obrador hold a rally against the privatization of the state-owned oil company Petroleos Mexicanos (Pemex). Lopez Obrador, who never recognized being defeated by Pena Nieto in the 2012 presidential elections, rejects Government's plans to overhaul the tax system and open the country's state-controlled oil industry to foreign investors. Photo: RONALDO SCHEMIDT, AFP/Getty Images