The bottom line is that Israel needs to face the fact that morally it is falling short. It needs to man-up and behave in a manner acceptable to the world community of nations.
One of the main criticisms is Israel's use of white phosphorous artillery against people, including civilians. White phosphorous should not be fired on the ground; it should be used in air bursts as a marking round to see where artillery going. If it hits you, it burns until the phosphorous is consumed, because you can't put it out. But it makes a visible puff of white smoke during the day and a fireworks-light bright flash at night. It used to be fun to watch other artillery batteries shoot in delta tangos (defensive targets) for our fire base at night, so that they would know where high explosive rounds would land if they had to be called for during the night. They weren't intended to be used against enemy personnel in a fire fight.