How do you prove it? Invite Banderistas to Fox studio. Let them reminisce on how they hoped for Hitler's help and how they continued to fight Russians in the "underground army" (yes, Banderite "patriots" led by cadre SS officer).
You can observe how the whole matrix breaks down and laugh like hell)). Why didn't they invite former Nazi officers, I am sure they can dig some out, few should still be alive. That would be a fascinating interview on how Nazis fought for freedom and democracy against evil Roosskies. Hey, it is coming--Nazism will be exonerated in the West. I personally know couple of prominent figures who work hard doing this.