They hunted down, shot, and killed multiple of their own, underwear-clad civilian citizens who were all the while waving white flags and loudly surrendering in hebrew [0]
Imagine the sort of intentional targeting we don't get to see, because the journalists are killed [1] or the internet is cut [2] or the power is cut [3] or because everyone hiding is terrified to even move, knowing anything moving will be shot on sight [4], even surrendering Israeli hostages [0]. What a nightmare.
Known (indeed, willing) indiscriminate killing of civilians (especially in civilian areas, yikes) is as much a war crime [5] as "intentionally targeting civilians", even if one shouts "get out of there!" or "human shields!" or "terrorists!" or "it's comin' right for us!" in a Calvinball-style declaration whilst doing it.
For more detailed analysis of how Israel seems to be ignoring their obligation to protect Palestinian civilians, I recommend consulting the full ruling [6] from the ICJ, the literal judges of this matter.