They're protesting because they're losing and they're pissed off. If there was actually substantial opposition to killing Jews Oct 7th wouldn't have happened. _Hamas_ doesn't even claim that "tens of thousands" of woman and children non-combatants have been killed:

euronews

Hamas suspected of manipulating Gaza death toll, research shows

Some 3,400 names were removed from the most recent death reports from the Strip, raising concerns of inflated figures by Hamas.

Even Hamas claims that the deaths are 72% males aged 13 to 55. That's not killing woman and children indiscriminately. That's killing combatants. Meanwhile hundreds of IDF soldiers have given their lives in the fighting since Oct 7th. Those men and woman simply wouldn't be dead if Israel was actually bombing Gaza indiscriminately. They died because Israel is trying it's best to only kill combatants. It's a miracle that so few civilians have died given that Hamas is quite happy to fight in the middle of them, even putting military forces in active hospitals. The fact is, those deaths were a waste. Israel should have indiscriminately leveled Gaza from the air – as is their right – and not sent any soldiers into Gaza. There's nothing Israel can do to get people like you on their side, who are ultimately anti-Semitics who don't really think Israel deserves to live in peace and would rather support perpetual victims. Israel might as well get peace by force. In this case, it's not hard: Gazan society is such a mess they'll wipe out themselves given the chance.