From the river to sea is difficult - because some protesters say it means that Palestinians should be able to live freely from river to sea, but others view it as a call to remove the country of Israel.
For some protesters, the issue of being anti-Zionism is distinct to being antisemitic. This is an extremely sensitive, difficult and probably highly personal subject. I am not sure I would use the language due to this. I can see you could protest for Palestinian rights with less contentious phrases.
This was an interesting read:
https://theconversation.com/the-conflation-problem-why-anti-zionism-and-antisemitism-are-not-the-same-267676
In 2022, I surveyed American Jews with a weighted sample to account for various demographics. I found that while 58 per cent identified as Zionist, 70 per cent identified as such when I defined Zionism as “a feeling of attachment to Israel.” When I defined Zionism as a “belief in a Jewish and democratic state,” the number rose slightly, to 72 per cent.
But a very different picture emerged when I presented a vastly alternate definition of Zionism. If Zionism, I offered, “means the belief in privileging Jewish rights over non-Jewish rights in Israel, are you a Zionist?” Here, respondents’ support for the kind of Zionism experienced by Palestinians plummeted: only 10 per cent of respondents said they were “definitely” (three per cent) or “probably” (seven per cent) Zionist, according to this definition, with a full 69 per cent saying they were “probably not” or “definitely not.”