Prior to the Nazi era , Königsberg was home to a third of East Prussia 's 13,000 Jews . Under Nazi rule , the Polish and Jewish minorities were classified as '' Untermensch '' and persecuted by the authorities . The city 's Jewish population shrank from 3,200 in 1933 to 2,100 in October 1938 . The New Synagogue of Königsberg , constructed in 1896 , was destroyed during Kristallnacht ( 9 November 1938 ) ; 500 Jews soon fled the city
Kristallnacht
Kristallnacht
Königsberg