Killing nazis is self defence, why do you feel the need to defend the indefensible? And I already know what you're getting at, the Black Book of Communism infamous for counting dead nazi soldiers as "victims" alongside a fuck ton of generous rounding and outright fabrications. Alongside the Victims of Communism memorial which literally celebrates actual nazis as well, you have to see what's going on there, right?

If you used the methodology that they used for the US today, the Victims of Capitalism would be in the infinites. Also while i'm here the Holodomor also affected people around the region of Ukraine and you never hear about those nations. Ask yourself why. It might have been a huge fuck-up but it was ultimately an accident unlike the actual genocide being carried out by the nazis. You have the soviets to thank for bringing an end to their tyranny because as history has proven, the rest of the nazi's rivals only really had a problem with them biting the hand that fed them, and would have had no problem allowing them to continue on their genocide once they backed off attacking them personally.

Point is, Hitler started the holocaust and Stalin ended it. To deny or obfuscate that fact is pretty demonstrable holocaust denial.