Jan Grabowski, a professor of history at the University of Ottawa, writing in The New York Times:

Poland’s efforts to reframe history reflect a trend proliferating in other European countries to obfuscate the history of the Holocaust. In France, the far right has made efforts to whitewash the record of the Vichy government, which collaborated with the Nazis. In Hungary and Croatia, local complicity and collaboration during the war is downplayed, shifting the blame for the Jewish catastrophe entirely onto the German occupiers. What makes the Polish example so distinctive is the apparent scale of state official involvement in redirecting the narrative.

In all these cases, pushing blame for the destruction of Jewish communities entirely onto Nazi occupiers obfuscates the larger context of Holocaust horror and the very real problems of collaboration, bystanderism and local antisemitism that helped run the machine of the Holocaust.