Polish people World War, 1939-1945 5 History 4 Political persecution 3 Atrocities 2 Guerre mondiale, 1939-1945 2 Politics and government 2 more ... Polonais 2 Underground movements 2 Atrocités 1 Crimes against 1 Death 1 Deportation 1 Ethnic relations 1 Foreign relations 1 Genealogical Materials 1 Histoire 1 Katyn Massacre, Katynʹ, Russia, 1940 1 Massacre de Katyn, Russie, 1940 1 Mort 1 Operation Vistula, 1947 1 Political atrocities 1 Politique et gouvernement 1 Prisoners of war 1 Prisonniers de guerre 1 Répression politique 1 Trials (Political crimes and offenses) 1 Ukrainian Primary Sources 1 Ukrainians 1 Victims of state-sponsored terrorism 1 less ...