Zionist Jews (so the vast majority of them) think the prospect of them having to live in Israel with equal rights with all Arabs in their occupied territories constitutes genocide. Not killing the Jews there, not ethnically cleansing them, just the reality of Israeli Jews having equal political power man-to-man with every Arab living there, and therefore constituting less than 50% of the body politic. That on its own is genocide. That is the true reason why they freak out over the slogan 'from the river to the sea'. They themselves know it doesn't mean 'kill every Israeli', despite what they pretend otherwise. But for them, white people being a minority in America and Europe is necessary progress in the name of racial equality. Pretty much every group on this planet wants hardcore ethnic-racial nationalism for their own while depriving everyone else, or at least white people, of it. White nationalists are the only group of people I've heard stressing that all groups should have the same right to a homeland, yet Zionist Jews, non-Zionist Jews and almost everyone else views them as Satan.