 Complete the following phrase:  During the era of the Peoples Republic of Poland, the Polish communist authorities colluded with the Soviet Union to censor information about the Soviet invasion of Poland in 1939 and repressions carried out against the Polish population during the period of Soviet occupation from 1939 - 1941, as well as subsequent repressions following the Soviet takeover of Poland in 1944-5, in particular - denying Soviet culpability for the 