"Polish priest and other Polish civilians as German hostages awaiting execution in Bydgoszcz, Poland, September 1939. The executions were revenge killings for Bloody Sunday, when ethnic Germans living in the same town were subjected to mysterious killings two days before the German invasion. The German army immediately perceived the killings as a Polish-instigated massacre. The exact facts about Bloody Sunday are still disputed."
[Photo] Young Polish resistance fighters in Warsaw, Poland, early morning of 2 Sep 1944, photo 1 of 2; the boy with helmet was identified as Tadeusz Rajszczak