They were so "traumatized" that they became racist and supremacist?
"The British told us that there are some hundred thousand negroes [kushim in Hebrew] and for those there is no value." - Weizmann, quoted by Arthur Ruppin in: Yosef Heller, Bama'avak Lamedinah , Jerusalem, 1984, p.140.
Interesting behavior. One would assume that those horrible pogroms would have thought those Zionist-Jews the value of empathy, but they just seem to have taken it as instruction manual and have been applying it themselves for almost a century now.