I AM GOING BACK THROUGH ARENDT THE ORIGINS OF TOTALITARIANISM

But from very different perspectives from before.
One very important point to make here, in even discussing her book, is that totalitarianism long antedated the 1930s and the rise of Hitler. 

Anti semitism had not played a central, or even a very large minor, role in the politics, or the run up to WWI.

After WWI it became a retrospective Nazi political rationale for what had gone before, but frankly the Jews had not been the big players in the run up to WWI, even though they were big players in government finance not even mainly that of Germany, and in leftist ideologies descending from Hegel, which however were widely shared with the much more numerous non Jews, and non Germans, everywhere. 

She notes this, in passing, in the Preface: 

"In this sense, it must be possible to face and understand the outrageous fact that so small (and, in world politics, so unimportant) a phenomenon as the Jewish question and antisemitism could become the catalytic agent for first, the Nazi movement, then a world war, and finally the establishment of death factories.  Or, the grotesque disparity between cause and effect which introduced the era of imperialism, when economic difficulties led, in a few decades, to a profound transformation of political conditions all over the world.  Or, the curious contradiction between the totalitarian movements' avowed cynical "realism" and their conspicuous disdain of the whole texture of reality.  Or, the irritating incompatibility between the actual power of modern man (greater than ever before, great to the point where he might challenge the very existence of his own universe) and the impotence of modern men to live in, and understand the sense of, a world which their own strength has established."