Massive and peaceful demonstrations in Puerta del Sol, Madrid, Spain Thousands have taken the Puerta del Sol of Madrid, under the name of Movement 15-M, to demonstrate against the democratic system and the privileges of the Spanish political class The m. Massive and peaceful demonstrations in Puerta del Sol, Madrid, Spain Thousands have taken the Puerta del Sol of Madrid, under the name of Movement 15-M, to demonstrate against the democratic system and the privileges of the Spanish political