20,000 dead is not a laughing matter. At least not for normal people. I don't know from which stone you crawled out from, but this is one more proof of what you are.
I seriously doubt you are a Polish man. Or if you are, you belong to the rare kind of Polish people, like Felix Dzerzhinsky or Zbig Brzezinski.
Spare me that BS, go cry over dead soviets somewhere else.