Police stand guard on the outskirts of Mexico City to prevent protesters blocking access to roads to the capital November 11, 2009. The Mexican Electricity Workers’ Union called out for another massive protest, challenging Mexico's President Felipe Calderon's plans to clean up the bloated public sector after Calderon shut down the money-losing state-owned power utility Luz y Fuerza del Centro (LFC) on October 11. REUTERS/Jorge Dan (MEXICO POLITICS CONFLICT BUSINESS ENERGY)
REUTERS/STRINGER/MEXICO