Though the NKVD commited many atrocities in Poland, the term "genocide" is too strong. The goal of the NKVD was to kill or imprison all real and imagined socio-political opponents of the USSR. This led to a large number of deaths. No attempt, however, was made to kill the Poles as an entire ethnic group.
That aside, Poland offered heroic resistance in WWII to both the NAZIS and the Bolshevicks. Not only did Poland continue to field entire divisions after Poland fell, the Polish Home Army was probably the msot efficient resistance movement in the war. After WWII ended, armed Polish resistance to the Bolshevicks continued for several years.
Edited by Cryptic - 17-Sep-2009 at 15:41