In the city of Hamburg protesters clashed with police during International Workers Solidarity Day on Sunday.
Several cars were set ablaze and a number of protesters were arrested. There are also reports of dozens of injuries among the protesters and the police on Sunday.
Berlin police dispatched more than 6,000 officers following unrest on Saturday, which left a number of officers injured.
Several clashes between the police forces and the demonstrators who were throwing bricks and paint bombs at them were reported in the cities of Hamburg and Berlin, DPA reported.
Approximately 423,000 people demonstrated across Germany on May Day according to the Confederation of German Trade Unions (DGB).
"May first is not a public holiday. It is a day when we demonstrate for the rights of working people," Michael Sommer, head of DGB, said at the main rally held in Kassel in central Germany.
"Fair wages, decent work and social security is the minimum that workers in this country expect, need and have to fight for again and again," he added.
People also protested against far-right demonstrations, with 5,000 gathering in Heilbronn against a march held by neo-Nazis. Thousands also protested in Greifswald and Bremen against rallies held by the rightwing National Democratic Party.
Four-hundred and fifty protesters were reportedly arrested.
Germany has seen an escalation in violence in recent years during May Day demonstrations, where conflicts continue to arise between the country's far-right groups, anti-fascists and police.
Monday, 2 May 2011
May Day violence continues in Germany
Sun May 1, 2011 5:39PM
Visitors and demonstrators crowd to attend May Day celebrations on May 1, 2011 in Berlin. AFP Photo
Hundreds of thousands of people have taken to the streets of Germany for May Day demonstrations, which turned violent in some areas.
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