6
Heidegger in ruins? Grappling with an anti-semitic philosopher and his troubling rebirth today
(theconversation.com)
I mean 
- https://en.wikipedia.org/wiki/Martin_Heidegger_and_Nazism
- https://en.prolewiki.org/wiki/Martin_Heidegger
Gabriel Rockhill: The CIA & the Frankfurt School’s Anti-Communism (emphasis mine):
Adorno also pursued this line of thinking, or rather feeling, in his criticisms of anti-imperialist and anti-capitalist student activism of the 1960s. He agreed with Habermas—who had himself been a member of the Hitler Youth and studied for four years under the “Nazi philosopher” (his description of Heidegger)—that this activism amounted to “Left fascism.”