Philosopher Yitzhak Melamed (Johns Hopkins) calls my attention to this petition about the atrocities in Gaza, and adds:  "if you are interested, here are two links to the only two Israeli/Jewish groups that came out unequivocally against the barbarism of the Israeli operation in Gaza":  here and here.  (The latter is the site of an orthodox group opposed to Zionism generally; the former that of a secular, progressive Israeli organization.)