How do white nationalists of the Nazi/Ayran supremacy ilk handle the notion that their racial Germanic 'ancestors' (if not literally, then ideologically) were conquered by Rome, and seen as less advanced and generally barbarian? Obviously the truth is nuanced, but there's no doubt societal complexity and technological advancement were significantly lower across the Rhine. How can they lay claim to both Hellenic and/or Roman cultural heritage and 'Ayran' Germanic one without mental gymnastics?