So, I ask again, how is killing 85 % of all crops different?
That is comparing fundamentally different things based on a single non-essential concrete.
The most important point: Nazism was an evil fascist ideology that willfully killed millions. The United States has never been that way.
Secondarily, to give a concrete difference: The civillian death toll from Nazism was massively greater than the civillian death toll in Vietnam, even if you are extremely generous in figuring the latter (estimates range from 245,000 to 2 million, per Wikipedia).
I think the point was that both the Nazi-induced famine and the US-induced famine (and subsequent contamination) are both war crimes.
> The most important point: Nazism was an evil fascist ideology that willfully killed millions.
No doubt, but it seems that the non-fascist America doesn't seem have been, in this case, much more interested in sparing civilians.
Vietnam soldiers were a bunch of misguided young American cannon-fodder that didn't want to be there. Some of them were callous. It was not Nazi Germany.
Keep in mind also that men like Ernest Medina had a one-hour trial and was acquitted across the board, and William Calley was actually given a life sentence... very briefly, until the POTUS himself stepped in and changed it to house arrest, and shortly thereafter gave a full pardon. Meanwhile heroic men like Hugh Thompson were given senatorial censure and publicly hounded. Trying to paint the US portion of the horrors of the Vietnam war as merely the result of 'a few misguided conscripts' is, frankly, obscene. Hell, the journalists covering the war used to call the daily afternoon briefings from the military "The Five O'Clock Follies", due to the sheer amount of CYA bullshit in them.
Edit: Perhaps a question - who do you think is more callous: a soldier who rounds up 'undesirables' and puts them on a train to what they think will end up at a work camp somewhere; or a soldier who shoots unarmed, unthreatening civilians for either entertainment (door gunner) or some sense of revenge (My Lai massacre)? This is what I mean when I say similar callousness was involved.
To liken this to the Holocaust is massively disrespectful to the Jewish people, Holocaust victims, and the Americans who fought in Vietnam.