To the Zionists, anyone that dares to criticize the state of Israel. Israel is off-limits in American political discourse, as you'd be label an antisemite by the people backing the genocide in Gaza. Even when the person in question doing the criticism is Jewish.
Pretty much, which is why they’re especially aggressive towards Jews who support the protesters cause, which makes it harder for them to empty the “antisemitism” cause.
They resort to question the person religion on the first opportunity, which is actual antisemitism but the “good” one that can be weaponized for a “greater cause” in the way they rationalize it, making it acceptable for them.
When Naomi Klein made her powerful speech two weeks back on how Jewish people should have an exodus from Zionism that rapid-Zionist crowd attacked her, said she was a self-hating Jew for saying we should walk back from Israel. They have no qualms about selfish Evangelicals speaking up for their cause, even while their support for Israel is self-centered on the rapture that will punish the Jewish people in the end times, a far more anti-semitic sentiment than counterarguements from actual Jewish people.
People forget the vast majority of Jewish people oppose Zionism through much of the 20th century. It was a fringe movement of bourgeois Ashkenazi Jews who were hostile to the practices of Judaism and were secularists, even while proclaiming God gave them the promised land in the Middle East, an oxymoron if you self-identify as atheist, as David Ben-Gurion and Theodore Herzl did.They saw practicing Jewish people of faith as being weak-minded and inferior to their perception of how Jews should stand in the world that is hostile to their existence.