The students have been protesting for education reform for more than 40 weeks now, but negotiations continue to stall.

Victor Ruiz Caballero / Reuters
Demonstrators are hit by a jet of water released from a riot police vehicle during a rally against the public state education system in Santiago, Oct. 13, 2011.

Victor Ruiz Caballero / Reuters
Demonstrators are hit by a jet of water released from a riot police vehicle during a rally against the public state education system in Santiago, Oct. 13, 2011. Chilean students are demanding for free and better state education, as well as for an end to profit-making in the public state education system.

Victor Ruiz Caballero / Reuters
Demonstrators are hit by a jet of water released from a riot police vehicle during a rally against the public state education system in Santiago, Oct. 13, 2011.

Victor Ruiz Caballero / Reuters
Students throw stones at riot police during a protest against the government to demand changes in the public state education system in Santiago, Oct. 13, 2011.

Mario Ruiz / EPA
Chilean police detain a student in Santiago, Chile, on 13 Oct. 2011.

Victor Ruiz Caballero / Reuters
A student shows a shot that hit his right eye during a rally against the public state education system in Santiago, Oct. 13, 2011.
Photoblog has been covering this story since May, where students were throwing rocks and getting blasted by water cannons, and just last month where a student got punched in the face by a policeman.