Just my two cents, but I think a hypothetical morality question like this would at least have some greater semblance of relevancy if we were to move it to something that is actually happening right now in real time that we could potential confirm as being entirely true. We are now separated by 70 years of fog from whatever happened in Nazi death camps, much less what might have been observed by a hypothetical mail carrier or, for example, what might have been hypothetically threatened to have been done to the hypothetical mail carrier.
We don't even know how many individuals were interred in Nazi death camps, much less being able to determine anything close to a realistic number of how many Jews, Gypsys or homosexuals were euthanized in those camps. Because of the sensitive nature of the religious/ethnic/cultural issues surrounding the European Jews, no one has been permitted to question the large numbers asserted without being decried as complete racists, anti-Semites or Nazi sympathizers. And yet, while I was working at Carnegie Mellon in 1986, I helped coordinate a stop there of a traveling debate program between two Jewish individuals related to the Holocaust. One claimed to have been a child in one of the camps when WWII ended; the other provided photos of his parents in a camp, along with their tattoos. The former asserted 6 million Jews killed in camps; the latter asserted that there weren't even 6 million Jews in European countries under German control during WWII, much less that all of them were interred . . . even much less that all of those who were interred were put to death. That man, whose parents had made it out of the camps, doubted that any significant number of Jews were put to death, that their deaths were far outnumbered by the number of military casualties on either side of the conflict -- and he adamantly asserted that the victimology narrative about Jews always being abused has done more to harm his people than if they would just take responsibility for the messes they get themselves in as a people, make adjustments and move on.
I thought he was mean. I thought the little old lady who'd been a camp survivor was much more sympathetic, and the audience certainly sided with her. Jewish students were outraged by the man. But in the aftermath of that I have had to recognize that the little old lady, while emotionally sympathetic, actually offered zip when it came to actual evidence; she could hardly even cite any sources for her numbers, whereas the man cited one resource after another and provided a typed bibliography.
I liken some of this to the current conflagration between woke idealists and the unwoke realists in our country. The woke want to shut up the unwoke, and they do so by demanding that the unwoke bow down to their accusations of bigotry and just being mean and uncouth. The story they tell sounds so sympathetic, and all it takes is outright cowardice to portray oneself as woke.
So how about if we re-frame the question: is the reporter who delivers the news knowing that mercenary activists are purposefully burning down our cities but labels those folks "mostly peaceful protestors" part of the problem? Or should we excuse them when this is all over with because maybe they just didn't realize how destructive their tacit blindness and/or support would turn out to be?