Who the Hell are the guilty three?(note your subtraction) Pulling a trigger on a woman, child, or an innocent person is not an "individual" crime? Starving and murdering slaves and other captives by guards are not "individual" crimes? Plundering is not a crime? All of the above and more are individual criminal acts which, apparently, you consider 'A' crime.
The Holocaust plus how many millions more died at the hands of murderers?Were the triggers pulled, dive bombers piloted, gas chambers operated, tortures implemented, etc. by just three persons? That, while the churches of Germany, Italy, etc. were conveniently silent. Is complicity in murder not also a crime?
Apparently you buy the "We didn't know" or "We just followed orders" denials after the war and during the trials. That makes dealiing with guilt so much easier for so many criminals of any faith.
I travel to Germany often to visit family, no one I know uses those excuses any longer. Most now accept the guilt of a great portion of their parent's generation and that of their country whose actions were empowered by criminals, but individually criminal just the same.
Your ridiculously puny number of 500,000 "individual acts" is but further denial when considering only WWII in addition to the actual amount limited by you to "modern", because we no longer may consider The Crusades, The Inquisitions, The Conquistadors, and let's not forget Salem. Were not lynchings accompanied by burning crosses used as a symbol of fright by groups proclaiming their religion?