In connection with the German invasion of Poland, about a hundred people of German origin were killed by Polish forces during the fighting in Bydgoszcz (german Bromberg). In retaliation for the murders, the Germans murdered civilians in the town’s Old square (Stary rynek). The murders have been called Bloody Sunday. What actually led up to the massacre (Bloody Sunday) is something that historians still discuss. From the German side, this was seen as a massacre of germans and a proof of Polish hostility to Germans. Exactly how many Poles were murdered as a direct consequence of the bloody Sunday is up for debate, but they are in the hundreds. Additional people were detained and deported to other places in occupied Poland. After the war, a memorial monument was erected in the square in honor of those murdered by the Nazis.
Current status: Monument (2008).
Address: Stary Rynek, Bydgoszcz.
Get there: Walk from central Bydgoszcz.
Follow up in books: Lukas, Richard C: Forgotten Holocaust: The Poles Under German Occupation 1939-1944 (2008).
Bydgoszcz is not a city that we directly connect with the Second World War in the same way as, for example, Lodz, Warsaw, Lublin, Wroclaw, Krakow and others, but that does not mean that the city was spared from Nazi brutality.