>shifted to the right
How did he move to the right? If anything, Bernie's rhetoric has been further left this campaign since he needs to differentiate himself from the other candidates, most of whom are paying lip service to some mild social democratic reforms in a way Hillary didn't. He has also been more forceful in his anti-intervetionist stance this campaign.
>since welfare capitalism pacifies workers
Yeah right let's support austerity and neoliberalism until a revolution magically falls from the sky.
>...while simultaneously establishing a national bourgeoisie
What do you even mean? It's the US of A. There's already a national bourgeoisie. Do you mean labour aristocracy?
>social democracy for about 100 years have thus been social fascism
This is and always has been a retarded theory. If you look at Sweden in the 1980's and Nazi Germany and conclude they're essentially the same thing, then fascism is a completely meaningless term. Reducing everything non-communist to fascism isn't some profound analysis, it's retarded. Is Venezuela also social fascist, or does it not apply to brown people?