A Greek flag is waved while thousands of people take part in an anti-austerity demonstration in Athens' Syntagma (Constitution) Square, on February 12, 2012. #

A protester throws a petrol bomb toward riot police during clashes in Athens, on Friday, February 10, 2012. #

Demonstrators protect themselves from tear gas during violent protests in central Athens, on February 12, 2012. #

A protester runs away from police during a violent anti-austerity demonstration in central Athens, on February 12, 2012. #

Protesters hurl fireworks at riot policemen during clashes in Athens, on February 12, 2012. #

A petrol bomb explodes among riot police during a huge anti-austerity demonstration in Athens' Syntagma (Constitution) square, on February 12, 2012. #

Green laser pointers are aimed at riot police by demonstrators during violent protests in central Athens, on February 12, 2012. #

Riot police (not pictured) push protesters back near the ancient Temple of Zeus (background, illuminated), during clashes in Athens, on February 12, 2012. #

A riot police officer tries to extinguish flames from a petrol bomb thrown by protesters outside the Greek parliament in Athens, on February 12, 2012. #

A man rides his bicycle past a burning building in Athens during massive clashes on February 12, 2012. #

Police clash with protesters in the street during a demonstration against the new austerity measures on February 12, 2012 in Athens, Greece. #

A riot policeman protects himself during riots around Syntagma square in Athens, on February 12, 2012. #

A protester wearing a gas mask stands next to a burning bus ticket kiosk in Athens, on February 12, 2012. #

A building on Stadiou Street is engulfed in flames during the demonstration against the new austerity measures in Athens, on February 12, 2012. #

Policemen stand in front of a burning building following violent anti-austerity protests in Athens, on February 12, 2012. #

A demonstrator holds a traffic sign during clashes between protesters and riot police near the Greek parliament in Athens, on February 12, 2012. #

A protester injured by policemen, during violent protests in central Athens February 12, 2012. #

Demonstrators throw firebombs at riot police during violent protests in central Athens, on February 12, 2012. #

A petrol bomb explodes near riot police during an anti-austerity demonstration in Athens' Syntagma Square, on February 12, 2012. #

A fireman tries to extinguish a burning cinema in Athens, on February 12, 2012. #

A fireman tries to extinguish a fire burning inside a cinema in Athens February 12, 2012. #

Debris burns in the middle of the street during the demonstration against the new austerity measures on February 12, 2012 in Athens, Greece. #

Workers clear a burned out cafe in central Athens, on Monday February 13, 2012. #

A firefighter extinguishes the charred remains of one of the capital's oldest restored cinemas in central Athens, on Monday February 13, 2012. #

A man walks past the Bank of Greece headquarters with the plaque altered to read "Bank of Berlin", in Athens, on February 13, 2012. #

A shopkeeper cleans up her damaged shop the morning after violent protests took place against the Government's austerity plans in Athens, on February 13, 2012. #