How wildly misguided and disrespectful. That is assuming this was even done in earnest. Accusations of anti semitism are levied at anti-zionist action all the time and it’s hard to dismiss those accusations when legitimate anti-semitism frequently tries to associate itself with anti-zionism.
I’m not even saying this couldn’t have been done by a legitimate anti-zionist who is also antisemitic. It just continually weakens the cause of anti colonialism when other forms of bigotry crop up around us. Anti semitism in all it’s forms is completely abhorrent and unacceptable. Advocating for the liberation of Palestinians should never invoke anti-Semitic ideology.
Edit: if you’re curious how antisemitism could come to exist in leftist movements, read the comments below. Giving no thought to the impact our actions have is unacceptable. Pissing people off is not a worthy trade for making Jewish leftists feel unsafe in our movements.