I am puzzled, here and in other places, when people connect Poles to murders of Jews during WW2 .. Poland was the first country to be attacked from two sides, and Polish Jews – as non-Jews – were sure that Polish cavalry will repulse the attack. Warsaw Jews record the shock when they realized that planes in the air are not Polish … We may be victims of an echo of old Soviet propaganda that was accusing pre-Soviet Polish government of all kind of crimes while covering their own. Remember Katyn where Soviets killed 22,000 Polish officers, half of all officers, 8% estimated Jewish, blamed Nazis for that, and Jewish organizations supported Soviet lies over the years. Even in 2020, there was an issue at Yad Vashem where they presented a pro-Russian exhibit.
Justd looked it up, USHMM still omits who killed Chief Rabbi of Polish Army:
“Rabbi Steinberg was later killed in Katyn massacre.”