German police have made 16 arrests after neo-Nazis vandalised a memorial on the anniversary of the 1938 Kristallnacht attacks on German Jews.
Germany's president has warned of continuing anti-Semitism
The extremists destroyed wreaths and candles which had been left at the memorial in Frankfurt an der Oder.
Some shouted "Sieg Heil" as police arrived, officials said.
Kristallnacht (Night of Broken Glass) saw mobs attack Jewish synagogues, homes and businesses across Germany, beating some people to death.
The attacks followed an inflammatory speech by Nazi propaganda chief Josef Goebbels.
Earlier on Thursday, German President Horst Koehler was among hundreds of officials and religious leaders who attended the opening of a new synagogue in Munich.
During the consecration ceremony, Mr Koehler warned that "open and latent anti-Semitism" still existed in Germany.
Munich's previous synagogue was destroyed 68 years earlier during the Kristallnacht pogrom.