Clashes erupt after Spanish PM corruption denial - Article Photos 4/16

Riot police detain a protestor during a demonstration against corruption, in Madrid, Friday, Feb. 1, 2013. Spain's top prosecutor says there is sufficient cause to investigate fresh allegations of irregular financing of Spain's governing Popular Party and that if necessary Prime Minister Mariano Rajoy would be called in for questioning. (AP Photo/Andres Kudacki)