Hence it will be perhaps unserious of me to persecute the legacy of Heidegger as if it mattered and point out that _death_ (in the sense of the annihilation of oneself) cannot be any particular thing for humans (or any beings) in general, because it has no subjective aspect; that is, one can't experience it from the inside. The prospect of it is merely another category of phenomena, subject to the infinite vagaries of point of view, prejudice, and interpretation which taint all phenomena, all the moreso because there is nothing to grasp or refer to. Death, publicly speaking, is a perpetually unfilled blank, at once everything and nothing, everywhere and nowhere. One _can't_ turn away from it, any more than one can turn away from the pink unicorn.
I would rather have a more concrete explanation of the Naziism. ------------ I say:
Actually, your comments on death are reminescent of Heidegger's: One's own death will never be grasped by one's own consciousness as an event, a thing, or anything else. It is, however, still given to consciousness _as a possibility_. And its everpresence is precisely one reason why H points to its apprehension as what guides one to being as a whole, to the world as such rather than to particular possibilities within the world (other phenomena H indicates elsewhere as providing this access include deep boredom, joy and love, by the way). Also, H would be in agreement that you can't _actually_ turn away from death -- but you can try to.
As to Naziism, well, Heidegger was a pretty weird Nazi. He was not a vehement anto-Semite or even a racist, for that matter. Considering the context in which it occured, the attacks on biologism in his Nietzsche lectures could even be considered gutsy, as also the Origin of the Work of Art, in which his selected artist is none other than "degenerate artist" Vincent van Gogh. (It's notable that, when H starts talking about the "German spirit," he always contrasts in with the US and the USSR, not the Jews or for that matter any ethnic group.)
H belongs to the "Decline of the West" anti-democratic, reactionary movement associated with Spengler, Ortega y Gasset, Ernst Junger, Yeats and Pound, which believed that WWI had shown that Western civilization is ineluctably decrepit and in need of a complete overhaul. I think that, when Hitler came to power, Heidegger pinned all his hopes on him almost instinctively -- here is a real, fundamental revolution at last! -- without even examining the details. At bottom, I think Heidegger was not a Nazi, though certainly a Fascist (note that these are not synonymous terms).
There is a letter somewhere from someone pretty high up in the Nazi hierarchy reading, "We have to keep an eye out for Herr Doktor Heidegger. He subscribes to a version of National Socialism that exists only in his own mind."
Chris Doss The Russia Journal