Let me just add my 2 cents.
Most Poles were not deluded, and we always knew this crime was committed by the USSR. This crime is so important to us because those who died were the intellectual elite of the post world war I Poland. From those killed about 8,000 were officers taken prisoner during the 1939 Soviet invasion of Poland, the rest were Polish doctors, professors, lawmakers, police officers, and other public servants. Poland’s conscription system required every unexempted university graduate to become a reserve officer.
It was planed and executed on the top levels of the Soviet government. The lack of those killed helped Stalin immensely to take control of Poland through its new communist government after the war and let us not forget the Soviet forces that were stationed in Poland until the 90’s.
The dispute between Russia and Poland right now is that Poland wishes the Katyn massacre to be recognized as genocide:
“Because of the circumstances of the Katyn Massacre, i.e. the fact that it was planned down to the very last detail by the highest party and state authorities of the USSR and carried out by the state apparatus under their authority, and on account of the scale and cruelty of the extermination of thousands of innocent people and the motives of the perpetrators, there is justification in considering the permissibility of applying the qualification of genocide within the meaning of art. 11 of the convention of 9 December 1948. The selection of persons for extermination was also characterised by the fact that they formed part of the intellectual elite of the Polish Nation which, under the appropriate conditions, could assume leadership. The physical elimination of these people was meant to prevent the rebirth of Polish statehood based on their intellectual potential. Therefore the decision of elimination was taken with the intention of destroying the strength of the Polish Nation and liquidate its elites. Therefore one can conclude that the murder of Polish prisoners of war and Polish civilians by the NKVD was dictated by a desire to liquidate part of the Polish national group. Hence, this action assumed the status of genocide as described in art. II of the Convention on the prevention and punishment of the crime of genocide. The view whereby the extermination of Polish citizens is an act of genocide was also expressed in the USSR’s stance during the trial of Nazi war criminals before the Nuremberg Tribunal after the end of World War II. On the 59th day of that trial, Prosecutor Yuri Pokrovskiy, deputy chief Soviet counsel for the prosecution, presented the Katyn Massacre as an atrocity that had taken the lives of 11,000 Polish victims and said that this Massacre was subject to the judgment of the International Military Tribunal in Nuremberg. Hence, such a stance by the Russian side was based on a recognition of the murder as a crime that falls within the scope of the International Criminal Tribunal on account of its seriousness, in other words a crime which, on accounts of its particular nature and the circumstances in which it was perpetrated, should be judged according to international criminal law.”
I do not have any links to the Russian sides official stance on the matter right now. It has changed immensely in the last year and more so after the plane crash but I do not think Russia will recognize Katyn as genocide.
A lot of us Poles (me included) are very grateful for the support we received from the Russian people after the faithful plane crush and I plan to light some candles on the 9th of may (Russian V day) on the Russian soldiers cemetery here in Wroclaw (former German city name Breslau). The fallen soldiers had no idea of the crimes of the Soviet regime against their own people and the citizens of other countries.