My argument is that people seem to get very worked up when the Jews do something, but basically nobody cares about other similar or even worse things done by other people. I suspect this is most likely because of antisemitism (not that every anti-Israel person is an antisemite, but that the movement would not have become so prominent without a large core of dedicated antisemites).
people in the west are getting "worked up" about it because our governments and our tax dollars are financing and facilitating these crimes! my government is not financing whatever iran is doing. i dont have any theoretical power over that. but my government, which is supposed to represent me, is a major actor in israel's crimes and i want my government to stop doing it
Edit: To elaborate, because there was another comment comparing this to Assad in Syria:
I think the difference is that Assad already belonged to the "enemy" is of the West (rightly so) and was immediately hit with sanctions.
What is special about Israel is that the government and, as it seems, large parts of the population, are displaying the same mentality - but unlike with Assad, no one is putting on the brakes here or threatening sanctions. On the contrary, our governments are protecting and enabling Israel in its behavior.
I think the aggression specifically towards Israel stems from the feeling of being on the wrong side this time.
It doesn't have to be antisemitism, but just a regular double standard.
Israel is modern invention by educated people who themselves have a long history of displacement and oppression. The bottom line is people expect them to "do better" compared to Syria, Myanmar, or China for that matter.
In that sense you could say it's actually racism towards all those other countries because the world just expects them to be violent, genocidal, and uncivilized anyway.
