Jews in America are not the ones committing a genocide in Gaza. Quite a significant proportion of the American Jews are absolutely horrified.
Can I ask why you think that American Jews are any more responsible for the crimes of Israel in Gaza than non-Jews, or Jews elsewhere in the world? Do you think that Judaism is a monolith, or that American Jews are the same as all Jews?
I ask because blaming Jews elsewhere for the acts of Israel, and conflating all of Jewry with Israel is a common tactic of anti-Semitic movements. I can't tell if you are doing that intentionally, or if you have just made your point poorly.
Assuming you are acting in good faith, you should look at the history of Black/Jewish relations in the civil rights eras. There was a disproportionate amount of support from American Jews (compared to the population at large) towards the civil rights movement.
MLK himself was outspoken about the support from American Jews:
"How could there be anti-Semitism among Negroes when our Jewish friends have demonstrated their commitment to the principle of tolerance and brotherhood not only in the form of sizable contributions, but in many other tangible ways, and often at great personal sacrifice. Can we ever express our appreciation to the rabbis who chose to give moral witness with us in St. Augustine during our recent protest against segregation in that unhappy city? Need I remind anyone of the awful beating suffered by Rabbi Arthur Lelyveld of Cleveland when he joined the civil rights workers there in Hattiesburg, Mississippi? And who can ever forget the sacrifice of two Jewish lives, Andrew Goodman and Michael Schwerner, in the swamps of Mississippi? It would be impossible to record the contribution that the Jewish people have made toward the Negro's struggle for freedom—it has been so great."