It's difficult to see much similarity between what the Trumpets have done and what the Nazis had done by the time they won their election. Moreover, we rarely appreciate how vile the politics of the western world was in those days.
On the one hand it was the age of Organisational Man, who worked for big companies, or states more centralised than any in history. Indeed, with colonialism still not dead, a realist thinker might imagine that iron-fisted empires were the way of the future.
On the other hand, racism was still acceptable, not just among right-wing thugs like Hitler, but also on the left from the progressive eugenics movement, genocidal communist fantasists like H.G. Wells and plain-old to American bigots like Woodrow Wilson.
In those days it was fashionable for intellectuals to think that liberal-democracy was a has-been that could not organise well enough to Do What Needs To Be Done (and what "needed" to be done, was of often genocide).
It was in this cultural milieu that the Nazis and Bolsheviks rose and did what they did. Conditions like that don't exist in the West any more. I can see trends that might lead back to similar conditions -- but it will take a good 50 years for them to mature.