Yesterday, there was the Katyn's massacre anniversary and in Katyn there was a celebration because of that. There were generally Polish and Russian politics, including the prime ministers of these countries. However, I think that all the world should remember about that. There was murdered about 21 thousands of people, mainly Polish officers.
All the time, Russia can't sorry for that happenings, and even they don't open all their archives about the massacre.
I understand that "sorry" can be difficult to say, but I think they should open the archives for history.
For more information you can visit the wikipedia http://en.wikipedia.org/wiki/Katyn_massacre
I'd like to know you know what it is?