Students participate in a massive pillow fight, known as Pillow fight for a best education, in protest against the government in Valparaiso city, about 121 km (75 miles) northwest of Santiago, July 13, 2011.

Students have been staging demonstrations on the streets demanding for changes in the public state education system. Chile's President Sebastian Pinera, beset by mass student protests over education standards and costs seen threatening his legislative agenda, has proposed a $4 billion fund for higher education.