I'm Jewish, the amount of antisemitism online has skyrocketed, and virtually all of it pretends to be "legitimate criticism of Israel", because blatant antisemitism gets blocked, but if you pretend it's about Israel then you confuse people, and you don't get blocked.

In all of my time online I've encountered actual criticism of Israel only a handful of times. Under 1%.

One easy way to tell: Are they criticizing all of Israel, or a specific policy?

This has more info: https://en.wikipedia.org/wiki/Three_Ds_of_antisemitism