Hamas attacked an IDF base and did a fantastic job keeping civilian death counts well below IDF thresholds of acceptable collateral damage.

The Israel government ignored the US's warning of the attack (why wouldn't they? they helped it happen by silencing intelligence reports about it, and somebody mysteriously moved the festival to the IDF base right before the attack.

So the only real civilian casualties of Oct 7 fall on the Israeli government, its people who elected it, and the AIPAC related Jewish institutions in the US who fund them. The blood is, as they once said, on their hands.