A youth walks past burning barricades on December 8, 2008 during riots in the centre of the northern Greek city of Thessaloniki . Fury at the fatal police shooting of a schoolboy, 15-year-old Alexis Grigoropoulos, erupted in a third day of rioting across Greece on Monday, with youths looting stores, attacking hotels and clashing with the security forces by parliament.AFP PHOTO /Sakis Mitrolidis (Photo credit should read SAKIS MITROLIDIS/AFP/Getty Images)