Greek police released a video of its operation on Saturday to clear two squats in the district of Koukaki in central Athens that were earlier re-occupied by anarchists.
Five people were detained as Greek police stormed the squats. The anarchists threw paint and projectiles at police, who responded with tear gas.
The buildings on 45 Matrozou and 21 Panetolikou Streets had been cleared by riot police in a sweeping operation on December 18 last year, but anarchists returned on Saturday afternoon.
The December raid at the building on Matrozou Street had drawn criticism over alleged police violence used against three residents of the adjacent house.
Police have denied any wrongdoing, saying officers had entered the neighboring building in order to gain access to the squat via the rooftop.