To achieve communism in the US I think you'd have to dissolve the labor aristocracy to the point that liberalism is no longer palatable. Fascism promises to restore the labor aristocracy, which is why (as you pointed out) so many flock to it for that "good old days" feeling.
To lose the final shred of hope, they'll have to see fascism crush their dreams of getting back what was lost. They don't have the foresight to see the tendency for the rate of profit to fall. They will only understand when they feel what centuries of indigenous peoples around the globe have felt: the crushing weight of boots on their skulls.
Would be neat if lemmy could form similar niche communities where people talk about their hobbies and scientific interests.