Anarchist groups and riot police clashed in Thessaloniki on Saturday after some 2,000 left-wing activists from all over Greece and the Balkans held a rally against racism.
Protesters threw Molotov cocktails and firecrackers at the police, who responded with tear gas.
According to reports, the gathering of Balkan anarchists was organised after far-right wing nationalists allegedly burnt down an Antifa-occupied building in Thessaloniki in January.