Everyone who gives weapons to Israel (or money to buy weapons) did this. I finally got angry enough to write Biden a letter, but who knows if he actually read it or not (probably not, but I did get a reply). It didn't seem to help much. All the protests aren't helping much. What can the people do to stop the govenment's support of Israel?
Nothing except convince another ME nation to convincingly offer allying with the US so they don't need Israel anymore.
In the meantime, efforts to thwart or protest the Harris campaign work against your ends and reduce their willingness to work with you if they do win. It sucks but that's your reality for now until January.