I do want you to consider the context here on Hacker News though. You and me have context, we understand the history, we understand at least something about wars and how they are fought. Most people here do not.
The problem isn't whether firing on civilians with no reason when they come to get food is wrong or right. We all know it's wrong. The soldiers in Gaza know it's wrong. We all know this is a war crime.
Most cases of war crimes during war are not prosecuted at all and not visibly. This is true for US wars in the middle east. It's true for the war the West wages against ISIS. It's true for Ukraine and Russia. It's a sad but unfortunate reality of our world. The current political climate and government in Israel are also not the best for the kind of outcome you are describing.
Iran and Hamas firing missiles and rockets into population centers is a war crime too. So is their embedding and use of civilians. The entire strategy of Israel's opponents in the middle east is to engage in war crimes.
Where do we place Israel on that scale? Is there more attention on Israel vs. other similar world events? Why? Do we see similar public debate and discussion of the morality of those wars in other countries? Again, where is Israel on that scale (not of idealistic fantasy world of justice but in the real world)?