(Photo: Police extinguishing a fire that was set in Copehagen during the 3-days of riots.)

The demonstration marked one of the few peaceful episodes during a weekend of violent clashes between police and protestors after residents of the Ungdomshuset youth collective were evicted Thursday.

Nearly 700 people have been arrested and dozens of cars and a school have been torched in one of the largest demonstrations of social unrest ever seen in the capital.