I am curious how much actual vs perceived anti-semitism there is. I've seen more people conflate "Criticism of the state of Israel" with "criticism of Jewish people" and further still with "discrimination against Jewish people" than I have seen actual antisemitic sentiment on the left.

Criticism of Israel's apartheid policies isn't antisemitism. It's such nonsense how the two have been conflated in recent years.

Street harassment or violence against visibly Jewish individuals has nothing to do with “criticism of Israel” though, and it did spike and has been increasing based on news articles and counts of reported incidents. https://www.jta.org/2021/05/21/united-states/antisemitism-in...

Arabs in Israel have the same rights (and more than Arabs in Arab countries).

Where is the apartheid? Is letting the Palestinian Authority govern Gaza and the West Bank apartheid?

Most of the stuff I've seen recently is not criticising the "apartheid policies" (debatable) of Israel. It's actual anti jewish rhetoric.

Seriously, most of the stuff you've seen recently?

Well, I've seen the opposite. I suspect it's not leftists you're witnessing saying such things.