El movimiento 15-M mantiene la movilización en las calles de Madrid
Demonstrators from the 15M movement face off with police officers in riot gear during a protest just outside Madrid's Puerta del Sol central square August 4, 2011. Tens of "Indignants" held a demonstration on the streets of Madrid against politicians, banks, the economic crisis and the austerity measures of Europe. REUTERS/Sergio Perez (SPAIN - Tags: CIVIL UNREST POLITICS BUSINESS)