German retribution against Poles who helped Jews

During the Holocaust in Poland, 1939–1945, German occupation authorities engaged in repressive measures against non-Jewish Polish citizens who helped Jews persecuted by Nazi Germany. The orders of the German occupation authorities, in particular the ordinance of General Governor Hans Frank of 15 October 1941, provided for the death penalty for any Pole who gave shelter to a Jew or helped him in any other way.

Source: Wikipedia — German retribution against Poles who helped Jews (CC BY-SA 4.0)