https://en.wikipedia.org/wiki/Soviet_repressions_of_Polish_citizens_(1939–1946)

The Molotov–Ribbentrop Pact was broken and the new war erupted, the Soviets had already arrested and imprisoned about 500,000 Polish nationals in the Kresy macroregion including civic officials, military personnel and all other “enemies of the people” such as clergy and the Polish educators: about one in ten of all adult males. There is some controversy as to whether the Soviet Union’s policies were harsher than those of Nazi Germany until that time.[11][12] An estimated 150,000 Polish citizens were killed by Soviet repressions.

500,000 Polish nationals imprisoned before June 1941 (90% male)[1]

22,000 Polish military personnel and officials killed in the Katyn massacre alone[2]

320,000 Poles deported to Siberia in 1939-1941[3]

https://en.wikipedia.org/wiki/Polish_Operation_of_the_NKVD

According to archives of the NKVD, 111,091 Poles and people accused of ties with Poland, were sentenced to death, and 28,744 were sentenced to labor camps; 139,835 victims in total.[20] This number constitutes 10% of the total number of people officially convicted during the Yezhovshchina period, based on confirming NKVD documents.[21]

According to historian Bogdan Musiał: “It is estimated that Polish losses in the Ukrainian SSR were about 30%, while in the Belorussian SSR… the Polish minority was almost completely annihilated or deported.” Musiał is also of the opinion that “it does not seem unlikely, as Soviet statistics indicate, that the number of Poles dropped from 792,000 in 1926 to 627,000 in 1939.”[18]

Almost all victims of the NKVD shootings were men, wrote Michał Jasiński, most with families. Their wives and children were dealt with by the NKVD Order No. 00486. The women were generally sentenced to deportation to Kazakhstan for an average of 5 to 10 years. Orphaned children without relatives willing to take them were put in orphanages to be brought up as Soviet, with no knowledge of their origins. All possessions of the accused were confiscated. The parents of the executed men – as well as their in-laws – were left with nothing to live on, which usually sealed their fate as well. Statistical extrapolation, wrote Jasiński, increases the number of Polish victims in 1937–1938 to around 200–250,000 depending on the size of their families.[22]

In Leningrad, the NKVD reviewed local telephone books and arrested almost 7,000 citizens with Polish-sounding name with the vast majority of such nominal “suspects” were executed within 10 days of arrest.[23]

The Polish-majority villages of Siberia were also targeted. In Belostok, Tomsk Oblast, 100 men of Polish origins were executed and their bodies thrown into the Ob River.[24] In Polozovo, Tomsk Oblast 33 Poles were arrested, of which 32 were executed and one died in captivity, and in Vershina 30 Poles were arrested (29 men and one woman), of which one person died during transport to Irkutsk and the rest were executed there.[25]

The small Polish communities of the more remote parts of the USSR were also targeted in the Polish Operation. According to the former secret police archives in Tbilisi, Georgia alone, at least 89 people were victims of the Polish Operation, and further 125 Poles were victims of other concurrent operations, whereas, according to Kyrgyz archives, at least 180 Poles fell victim to all simultaneous operations of the Great Purge in Kyrgyzstan.[26][27]

Yes, I am stating that the Soviets committed genocide against the Poles.