They also killed returning Jews after the shoa when they went back to their homes , the poles were weaned on antisemitism , how do I know? 6 of my grandmothers and grandfathers family were murdered in the polish death camps and others survived and gave witness
The anti-Jewish violence in Poland from 1944 to 1946 refers to a series of violent incidents in Poland that immediately followed the end of World War II
https://en.wikipedia.org/wiki/Anti-Jewish_violence_in_Poland,_1944–1946
How did Christians and their churches in Germany respond to the Nazi regime and its laws, particularly to the persecution of the Jews? The racialized anti-Jewish Nazi ideology converged with antisemitism that was historically widespread throughout Europe at the time and had deep roots in Christian history. For all too many Christians, traditional interpretations of religious scriptures seemed to support these prejudices.
https://encyclopedia.ushmm.org/content/en/article/the-german-churches-and-the-nazi-state
And after the war the catholic church helped nazis to escape to south america , it was called the rat line
Vatican Ratlines
Senior German Nazi criminals escaped prosecution after World War II by the use of different “ratlines “ spread over Europe, which were operated via a network of Vatican contacts. The Catholic Church believed this effort would contribute to the “re-Christianization” of Europe and feared the threat to Europe of paganism and communism. In the pursuit of its political and spiritual interests, it was quick to forgive Nazi war criminals. Welcoming former sinners back to the bosom of the Church seemed a higher calling than turning them over to war crimes investigators. According to many church officials who were questioned about this practice: “You don’t understand us, but we did the right thing,”
http://holocaustonline.org/vatican-ratlines/
some individual poles helped but that was the exception not the rule
It’s true, among the Poles there were, and still are, righteous Gentiles. But a vast majority were and are haters of the Jewish people.
Yes, Poles Imbibed anti-Semitism With Their Mothers’ Milk
https://www.haaretz.com/opinion/.premium-yes-with-their-mothers-milk-1.6960439