"Why are our children's lives seen as so cheap?" demanded Umm Raed al-Nuaizi, a widow whose son was shot and wounded after he went overnight to collect food for his hungry family in central Gaza.
"My son went to get a grain of flour so that he could eat and feed his siblings, and now he is in the intensive care unit."
At least 46 people waiting for aid have been killed by Israeli fire in two incidents in central and southern Gaza, according to rescuers and hospitals.
UN agencies have condemned the US and Israel-backed food distribution system, with one official calling it "an abomination" and "a death trap".
Such deadly incidents have recently become a near daily occurrence but have attracted relatively little attention outside Gaza since Israel attacked Iran more than a week ago.
Without including the latest deaths, the UN has said that more than 410 Palestinians are reported to have been killed by Israeli gunfire or shelling since the Gaza Humanitarian Foundation (GHF) began work in late May.
