Another is that before the war, Poland was only marginally less antisemitic than Nazi Germany of that time. And after the war picked up where they left off with the few Jews who tried to return.
That I had heard about.
Once I read that they used to add Jewish blood to the sausage.
“Before the war Poland was only marginally less semetic than Nazi Germany of that time”
Utterly unknow is the effect of the waves of penniless, illiterate, often diseased who, fleeing from the ghettos of Russia, {now Poland}, through the porous, illogical Versailles borders into the remnants of a prostate, democratic Germany, bore on the eventual rise of Nazism.