Are we or they to expect that the events of the '30s were so painful that, even in similar economic circumstances today, they could never be repeated, even in small part?

Of course not. And I didn't say that. However, you would have to define "repeated" very carefully. And, having done so, you might find the conclusion was that the parallel was too schematic to fit the real complexities of historical situations.

ARGeezer:

If the factors that led to those events have indeed been dealt with then it should be possible to discuss those events rationally.

If you are ready to write the historical treatise that would adequately cover the ground you propose, I'd be eager to see it. But just making a quick cross-reference between German citizens today and those of the 1930s is not adequate. And the fact that over-reaction to it thinly disguises denial (of today's situation), does not make it so.

Oh, and pace Colman above, and what I feel is the subtext of your comment, I am not laying down rules or proposing censorship. It has been said again and again here that editors are members of the community who are perfectly within their rights in expressing their opinion. That is what I'm doing (and presumably you and Colman too). The limits to discourse on ET (beyond certain obscure open thread traditions) are explained here and here.