Militant youths mounted new attacks against the Greek police on Sunday, marring at least two marches by demonstrators angered over the killing of a teenager in a police shooting and destroying scores of shops, cars and businesses across the country, HeraldTribune reported.
The violence rattled Athens and Thessaloniki, the second-largest city in Greece, where youths hurled gasoline bombs, rocks and clubs at the police, sending hundreds of bystanders and peaceful protesters scrambling.
In Athens, riot police officers retaliated, firing several rounds of tear gas that cloaked the Greek capital in acrid gray smoke.
At least one apartment block was evacuated after masked youths set fire to a car dealership on the lower level and the ensuing flames licked up to residents' balconies, the private television station Alpha reported.
Stylianos Volirakos, a spokesman for the Athens police department, said "dozens" of officers had been hurt in their efforts to seal off streets around the Polytechnic Institute, where rioters erected makeshift barricades with burning trash bins.