I also think it has to do with jealousy: blacks are furious that Jews came here from Europe, fleeing the Russian pograms 100+ years ago or Hitler 80+ years ago, arriving penniless and uneducated, and not even speaking the language….
…and by the next generation, their kids are college-educated professionals (especially all those smart Jewish engineers out of CCNY), owning homes in the suburbs, and living middle and upper-middle class lives - due to their brains, values, and motivation.
…. And here they remain, still in the old Brooklyn and Bronx neighborhoods, even though they attend the same schools as the Jewish kids, and had the same opportunities via the City College system
How DARE the Jews succeed!