Chilpancingo, Mexico.
A protester lies dead as police secure the area after clashes broke out on a road. A protest by students demanding a meeting with the governor of the state of Guerrero turned violent as students clashed with state and federal police, as well as soldiers. At least two protesters died during the clashes.
[Credit : Alejandrino Gonzalez/AP]

Chilpancingo, Mexico.

A protester lies dead as police secure the area after clashes broke out on a road. A protest by students demanding a meeting with the governor of the state of Guerrero turned violent as students clashed with state and federal police, as well as soldiers. At least two protesters died during the clashes.

[Credit : Alejandrino Gonzalez/AP]

A protestor throws a molotov cocktail at riot police outside the parliament in Athens, Greece, on December 6, 2011, during demonstrations to commemorate the police killing of a student three years ago which sparked violent riots lasting weeks. Pupils and students marched to mark the December 6, 2008 death of Alexis Grigoropoulos, 15, shot by police as Greece first came under pressure from the eurozone debt crisis.
[Credit : Angelos Tzortzinis/AFP/Getty]

A protestor throws a molotov cocktail at riot police outside the parliament in Athens, Greece, on December 6, 2011, during demonstrations to commemorate the police killing of a student three years ago which sparked violent riots lasting weeks. Pupils and students marched to mark the December 6, 2008 death of Alexis Grigoropoulos, 15, shot by police as Greece first came under pressure from the eurozone debt crisis.

[Credit : Angelos Tzortzinis/AFP/Getty]

Student protesters cover themselves from water cannon fired at them by the police as they tried to march to Malacanang Palace in Manila on December 6, 2011, to camp out. Philippine riot police fired water cannon to break up a protest December 6, by around 500 college students inspired by the Occupy Wall Street movement in the United States, organisers said.
[Credit : Ted Aljibe/AFP/Getty]

Student protesters cover themselves from water cannon fired at them by the police as they tried to march to Malacanang Palace in Manila on December 6, 2011, to camp out. Philippine riot police fired water cannon to break up a protest December 6, by around 500 college students inspired by the Occupy Wall Street movement in the United States, organisers said.

[Credit : Ted Aljibe/AFP/Getty]

A demonstrator is hit by a jet of water as they clash with riot police during a protest to demand for changes to the public state education system in Santiago, Chile November 18, 2011. Chilean students have been protesting against what they say is the profiteering in the state education system, local media reported. 
[Credit : Ivan Alvarado/Reuters]

A demonstrator is hit by a jet of water as they clash with riot police during a protest to demand for changes to the public state education system in Santiago, Chile November 18, 2011. Chilean students have been protesting against what they say is the profiteering in the state education system, local media reported. 

[Credit : Ivan Alvarado/Reuters]