When your in a warzone, the police no longer have jurisdiction and handling of the civilian populace DOES fall under the army. The aid trucks should be militarily escorted and those protesters should be forcibly moved. Blockading humanitarian aid is an international crime if your a civilian doing that you should be arrested and charged as a criminal.
I think the US at this point should invade israel and disarm their military like we did to Japan. And strip them of their statehood. Let that be a lesson to any who think they can behave like this and call themselves civilized people.