Police in Berlin arrested 57 people while around 50 officers were hurt as young demonstrators threw bottles and rocks and set fire to cars and rubbish bins. There were also clashes in Hamburg, where anti-capitalist protesters attacked a bank.
In Turkey, masked protesters threw stones and petrol bombs at police, smashing banks and supermarket windows in its biggest city, Istanbul. Security forces fired tear gas and water cannon at hundreds of rioters and more than a hundred were arrested with dozens more hurt. There were also scattered skirmishes with police in the capital, Ankara, where 150,000 people marched.
The government had declared May Day, traditionally marked by rallies by labour unions, a public holiday this year under pressure from unions.
In Greece, officers fired flash grenades to disperse rioters in Athens after attacks on banks and traffic cameras. Transport strikes disrupted bus, train and ferry services as well as flights by Greek carrier Olympic Airlines.
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