What I have seen is a confusion (perhaps intentional) between anti-semitism, and protesting Israel’s behavior since the Hamas attack in October.
Criticizing Israel’s response is not anti-Semitism- it is literally just criticizing the response.
With Palestine and Israel, we were able to see it with our own eyes. I remember specifically watching TikToks of a teenage girl in Gaza posting about the evacuations, hearing the bombs in the background, etc. It felt "real" to us, which is a terrible way to put it, but I believe that is why the protests are much larger than other conflicts.