The term "Holocaust" is usually used in reference to the mass murder of Jews in World War II. I have the dates for World War II as September 1939 - middle of 1945. And I have the birth day of Reform Zionism as 1935 at the latest, which was the year that the World Zionist Organization failed to accept Jabotinsky's program, and he seceded to form the New Zionist Organization. But Jabotinsky was promoting his ideas long before that. Hell, he died in 1940! There was no known Holocaust at the time, and certainly no "direct consequence of the Holocaust".
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German-legislated persecution of Jews, if not mass murder, began long long before 1939, my friend, but i won't dwell on that.
These guys will, though. The general consensus holds that the Holocaust began with the enactment of the Nuremberg laws, in 1935.
Why do you insist on taking such banally obvious underlying circumstances and ignoring them!
Of course, Jabotinsky was a Russian, so it's more likely his ideas came from somewhere else (hint: starts with "P" ends with "ogroms")
BUT!
As you are keenly aware, the movement itself was outcast within mainstream Zionism! No support! No nothing, outside of a few violent splinter groups in Palestine and some political-types in Europe. Given ultra-nationalist Europe and "Arabia" at the time, a Jewish nationalist movement was only to be expected!
Of course, the movement remained outcast for a while and on the periphery of Zionist politics. It didn't emerge as a real opposition candidate to ben Gurions Labour Zionism or even enjoy any mainstream public support, until sometime around the end of the H...
well, I'll let you finish that one.