There has been rioting in Athens after police shot dead a teenager. The violence was worst in Exarchia district, a regular scene of clashes between police and leftist groups.
Youths set up road blocks, threw petrol bombs, burned cars and smashed shop windows.
The scene around the National Technical University School of Athens resembled a war zone. Trouble also broke out in other Greek cities.
Riot police are guarding private property after shops were targeted by the protesters.
A burned shop dummy lies in the road, adding a macabre element to the night's events.
Buildings and cars were set alight as youths went on the rampage in the city centre.
As morning came, emergency crews surveyed the aftermath.
Shop owners are left to pick up the pieces, possibly losing out on important Christmas trade.