Photo Ed: Greece braces for third day of riots

Youths clash with riot police on December 7, 2008 during a massive demonstration near the main police station in Athens following the deadly police shooting of a teenager late on December 6 in the Greek capital. Andreas Grigoropoulos, 15, was shot by a police officer who opened fire after youths threw objects at his car. AFP PHOTO / LOUISA GOULIAMAKI

A protestor throws a petrol bomb at riot police on December 7, 2008 during a massive demonstration near the main police station in the northern Greek city of Thessaloniki following the deadly police shooting of a teenager late on December 6 in Athens. Andreas Grigoropoulos, 15, was shot by a police officer who opened fire after youths threw objects at his car. Two Greek police officers were arrested on December 7 over the killing of Grigoropoulos. AFP PHOTO/ Sakis Mitrolidis

A car burns in front of riot police on December 7, 2008 during a massive demonstration near the main police station in the northern Greek city of Thessaloniki following the deadly police shooting of a teenager late on December 6 in Athens. Andreas Grigoropoulos, 15, was shot by a police officer who opened fire after youths threw objects at his car. Two Greek police officers were arrested on December 7 over the killing of Grigoropoulos. AFP PHOTO/ Sakis Mitrolidis

Riot police avoid fire bombs and stones thrown by protesters outside the Athens ' Polytechnic during clashes, on Sunday, Dec. 7, 2008. Riots broke out Sunday in the Greek capital as demonstrators protested the fatal police shooting of a teenager in Athens the previous night. Youths hurled firebombs, rocks and other objects at riot police, who responded with tear gas. The circumstances surrounding the shooting of a 16-year-old boy by a police special guard in the downtown Athens district of Exarchia are still unclear. But the death triggered extensive riots in cities around the country overnight, with youths burning shops, setting up flaming barricades across streets and torching cars. (AP Photo/Petros Giannakouris)

Policemen take up positions during riots in Athens December 7, 2008. Hundreds of demonstrators clashed with riot police in Athens and the northern Greek city of Thessaloniki in a second day of protests at the shooting of a 15-year-old boy by police. REUTERS/Yiorgos Karahalis

Riot police try to avoid a petrol bomb during clashes in central Athens on Sunday, Dec. 7, 2008. Riots broke out Sunday in the Greek capital as demonstrators protested the fatal police shooting of a teenager in Athens the previous night. Youths hurled firebombs, rocks and other objects at riot police, who responded with tear gas. The circumstances surrounding the shooting of a 16-year-old boy by a police special guard in the downtown Athens district of Exarchia are still unclear. But the death triggered extensive riots in cities around the country overnight, with youths burning shops, setting up flaming barricades across streets and torching cars. (AP Photo/Thanassis Stavrakis)

Riot police avoid fire bombs thrown by protesters outside the The Aristotle University of Thessaloniki during clashes, Sunday, Dec. 7, 2008. Riots broke out Sunday in the Greek capital as demonstrators protested the fatal police shooting of a teenager in Athens the previous night. (AP Photo/Nikolas Giakoumidis)

A protester prepares to throw a stone at riot policemen during riots in Athens December 7, 2008. Hundreds of demonstrators clashed with riot police in Athens and the northern Greek city of Thessaloniki on Sunday in a second day of protests at the shooting by police of a 15-year-old boy. REUTERS/John Kolesidis

Youths burn on December 7, 2008 a Greek flag at the spot where a 15-year-old boy was shot late on December 6 by a police officer during a massive demonstration near the main police station in Athens. Nearly 5,000 people rallied outside the National Museum in the vicinity of the spot where Andreas Grigoropoulos, 15, was shot by a police officer who opened fire after youths threw objects at his car. AFP PHOTO / LOUISA GOULIAMAKI