I would be grateful if you could explain. Do you mean when many of your academics were persecuted under the Russian's. I would just like to know a little more from a Polish view, rather than from international history that one reads. Thanks.
Katyn Massacre"The number of victims is estimated at about 22,000, the most commonly cited number is 21,768."
"About 8,000 were officers taken prisoner during the 1939 Soviet invasion of Poland, the rest being Poles arrested for allegedly being intelligence agents, gendarmes, saboteurs, landowners, factory owners, lawyers, priests, and officials."
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Source:
Decision to commence investigation into Katyn Massacre, Małgorzata Kużniar-Plota, Departamental Commission for the Prosecution of Crimes against the Polish Nation, Warsaw 30 November 2004. English translation of Polish document.