I see strong links between WWII and our current (human-driven) "Sixth Extinction" laying waste to the plenitude of Nature.
The eugenic Nazis believed that the plenitude of humanity needed drastic pruning - starting with the Jews and Slavs.
Their plenticidal crime was against the right of all humans to exist.
The eugenic Allies/Neutrals told us to stifle our plenitude of compassion for the weak and the unfit - to limit our compassion to the fate of our own 'fit' .
Their plenticidal crime was against compassion for strangers.
My biographical subject ,Martin Henry Dawson ,("Manhattan Misfits") rebuked all three. His Manhattan Project ("Penicillin-for-All") originally hoped to save just a few strangers from an eugenic and heartless Allied medical establishment.
It ended up rousing a nation and changed our whole world for the better -- forever.