Earlier quoted context omitted.
No one is upset that an algorithm accidentally generated some images, they are upset that Google intentionally designed it to misrepresent reality in the name of Social Justice.
Depicting Black or Asian or native American people as Nazis is hardly "Social Justice" if you ask me but hey, what do I know :)
In other words, having diversity everywhere is the prime objective, and if that means you claim that there were Native American Nazis, then that is perfectly fine with these people, because it is more important that your Nazis are diverse than accurately representing what Nazis actually were. In some ways this is the political left's version of "post-truth".