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 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 student holding a pencil tries to ‘erase’ riot police during a demonstration in Bogota, Colombia November 10, 2011. Students marched in a nationwide protest against government reform of public universities, according to student organizations.
[Credit : Fredy Builes/Reuters]