I heard some PhD types who had written papers on Hitlers rise one time explain it that even though we can draw parallels to Hitler's rise. It in no way means we should expect another group like the Nazi's to rise to power. They were saying hindsight can say Hitler rose to power because X,Y and Z. But it in no way means that X,Y and Z are what create a Nazi power or means another one is going to show up. That it's wrong to take something like lists that detail the things that contribute to fascism and say its happening now so therefore the other party are the next Nazi power.
I think what the message was that X,Y and Z only shows what could have contributed to Nazi's seizing power but when used with foresight its not accurate.