fckhsbra
Israel is the only state that can get away with such behavior without a single sanction. Russia is under a severe package of sanctions for doing something that is not fundamentally different.
Israel is also a particular focus in the West (and especially in America) because it's done with US support (in the UN) and US weapons. So, yes, people are talking about it more than, say, the situation in Myanmar. Note that there are also sanctions against Myanmar, among other things a ban on military sales to them for what they are doing; so can we now similarly ban the sales of weapons to Israel?
2. Even if it was true, does that then justify murdering them? When there is hostage taking in, say, a supermarket the police tries their best to stop only the hostage taker(s) and not their victim(s); they certainly don't bomb the entire supermarket from the sky causing 500 casualties.
Many Western countries have had brutal acts of terrors committed against them, they didn't raze the entire neighborhoods were the perpetrators lived.