Berlin memorial to gay victims of Nazis is vandalized.

Candles and roses have been placed in front of the Memorial for the Homosexual Victims of National Socialism in Berlin, on Jan. 27, 2014. (Daniel Naupold / picture alliance via Getty Image)

Berlin police say a central memorial to the gay victims of the Nazis has been vandalized.

The concrete memorial in Berlin’s Tiergarten park, near the memorial to the Jewish victims of the Holocaust, features a window into which visitors can…