As police intervened against the traditional areas of leisure and debate for the radical youth of Patras, violent large-scale clashes erupted in the Greek city, as police attempted to prevent Anarchists from retaking Olga Plaza to the drug dealing mafias.
Two days later another major confrontation happened as police forces protected a Nazi landing "party" in the Peloponnese port city, the third largest town of Greece. While a hundred, mostly elderly, Nazis danced under massive police protection, many more citizens marched to protest institutional support for fascism. Later clashes between the ultra-violent police unit DIAS and the radical citizens resulted in some 45 people arrested and beaten under arrest.
Source and more details: Contra Info.