they think Israel is morally obligated to stand still and do nothing in response to Palestinians shooting

Because that's what they think all White "colonizers" (which includes White nations that never had a colony and also pale-skinned nations that aren't White, like Japan and Israel) should do when darker skinned "oppressed" attack them. You'll see this same policy in action in every liberal American city where they let violent blacks go without charges and also in countries like the UK where the government is complicit in the nation being invaded by violent foreign brownoids.