Quoting: joepilsudski
When Russia Occupied Poland in 1939
The Jewish population was mainly from Russia, and Poles never fully accepted them.
Who is writing that. It is a brutal mistake. Jews are all from Poland or Lithuania. There were no Jews in Russia before RP Partitions.
In 1939 very few Jews came from Soviet Union to Polish lands. Maybe some public servants and military officers. The rest had nothing to do there.
Among Jews kiled in exPolish territory by Germans there are nearly no Jews from the Soviet Union.