The original "nazis"
Long before World War II, or Hitler, or the actual Nazi party itself, you had the ancient Mayans who routinely sacrificed "expendable" individuals in their efforts to "please their gods" by either tossing them into the pit of an active volcano or off a high cliff, or subjecting them to various types of physical mutilations including dismembering body parts, or simply burying them alive.
Then you had ancient Rome throwing Christians to the lions at their arenas to amuse a huge audience (and, after Rome became a Christian nation itself, it would be the non-Christians getting persecuted).
And let's not forget the Inquisition and the way heretics, social misfits, and non-believers were burned alive at the stakes.
To say nothing about 1692 Salem.
Who committed all these atrocities? Why, mainly the "normal people"---by way of the officials of their society who acted as their "agents" on behalf of not only the cultural narratives of the time, or of the social mores and dogmas, but also of the "mob mentality" of the majority "average" whose beliefs and prejudices ruled the day.
In short:
The true "nazis" are simply, ultimately, the "normal" people. The dutifully "upstanding" and "morally/socially flawless" ones society values and favors.
The "norms" are the "master race" who get to judge anyone considered "inferior" ("cultural interlopers": anyone deemed a "nuisance", a "threat", or any "oddball" who can't seem to "fit in" properly) and determine what ways to either "remove them from society" or at least "keep some kind of a sharp vigil on them" when they're out and about.
And the job of the government, authorities, and lawmakers is to be the "right-hand men" of all these "normals" and to write and enforce laws which cater to all their wishes, whims, ideals, dogmas, customs, and beliefs. And to go after, apprehend, and possibly punish any designated "cultural interloper" and see to it that they're properly put in their "designated place".
In any society you'll always find that the "master race" always rules.