For Palestinians – not just supporters of Hamas – the piles of bloodstained body bags were all the proof they needed. For them, the difference at Al-Ahli was not of principle but of degree. Israel has been killing scores of Palestinians every day since it responded to the Hamas surprise attack, which Prime Minister Benjamin Netanyahu reminded Mr Biden had killed at least 1,400 people, mostly Israeli civilians. Al-Ahli was, for Palestinians, more proof of Israel’s disregard for their lives.