A protester throws looks towards riot po

A protester throws looks towards riot police by the parliament in Athens on December 6, 2011 during a demonstration 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. AFP PHOTO/ LOUISA GOULIAMAKI (Photo credit should read LOUISA GOULIAMAKI/AFP/Getty Images)