I think you could make some wine for personal use. As well as the "sacramental" and "industrial" exceptions, you could also get medicines with high alcohol content with a prescription.
As for "racism" and "xenophobia," it was inevitable that some groups used marijuana or opiates -- or alcohol -- more than others, so there would inevitably be such propaganda elements in any drive toward prohibition of drugs and alcohol. That wasn't and isn't any reason to discount or discredit the arguments of the prohibitionists on their face. Our contemporaries assume that their own distaste for such arguments is proof that those who used them had no case or were uniquivocally on the wrong side, but that's not the case. If it were, it would apply equally to present-day arguments over "ethnic profiling." It is true, though, that in the majority culture, alcohol and opiates could be obtained through patent and prescription medicines, rather than in unprocessed form.
"There are 100,000 total marijuana smokers in the US, and most are Negroes, Hispanics, Filipinos and entertainers. Their Satanic music, jazz and swing, result from marijuana usage. This marijuana causes white women to seek sexual relations with Negroes, entertainers and any others."
- Congressional testimony of Harry Anslinger