Biden did support the crackdowns and arrests of about 3000 pro Palestinian protesters, including a law to label the protests as antisemitic and target universities that 'tolerate' the (peaceful) protests. He backed both that law and the law that can label any pro-palestinian (and any pro- marginalized group) organization as 'supporters of terrorism' to revoke federal funding and add tax penalties, both of which fit into Project Esther, the plan Trump is currently enacting as part of Project 2025.
Biden didn't deport any protesters like how Trump is doing now, but he certainly helped Project Esther. Biden also funded and defended Israel's genocide of Gaza for over a year, in opposition to international/domestic law and public sentiment, fracturing his voter base when it was most critical to earn as many votes as possible to win against a Fascist who is continuing and ramping up the genocide. Yeah, he could have done a lot fucking more to prevent this shit, I'm not going to pretend otherwise. And yeah, I did vote Harris and told others repeatedly to do the same despite all of Biden's support for Israel.
Under pressure from donors and legislators, many universities cracked down on pro-Palestine activities on campuses. As many as 3,000 student protesters were arrested at the height of the protest movement in 2024.
That is a federal anti-discrimination law that bars discrimination based on shared ancestry, ethnic characteristics or national origin. Adding IHRA’s definition to the law would allow the federal Department of Education to restrict funding and other resources to campuses perceived as tolerating anti-Semitism.
https://en.wikipedia.org/wiki/U.S._National_Strategy_to_Counter_Antisemitism
The US House of Representatives on Thursday passed a bill that would grant the Treasury Department the power to revoke the tax-exempt status of any non-profit it deems to be a "terrorist supporting organisation", which could put many pro-Palestinian groups critical of Israel's war on Gaza in danger.
https://www.middleeasteye.net/news/us-house-passes-bill-targeting-charities-and-pro-palestine-groups
Israel is a fascist apartheid state committing genocide. Police violently cracking down on anti-israel / anti-zionist speech is also fascist. You are conflating anti-zionism with anti-semitism, which is genuine anti-semitism. Anti-zionism calls for the end to genocide and for Palestinians emancipation.
Zionism is about Settler Colonialism and Ethnic Cleansing of native Palestinians, it is not reflective of Judaism nor is it representative of Jewish people. Anti-zionism is not anti-semitism. The conflation of the two is genuinely antisemitic, as it falsely attributes the actions of Israel to all Jewish people.
Zionism is anti-Semitic at it's core, it other-izes Jewish people, and justifies the violent settler colonialim of Israel as in the defense of all Jewish people, which only serves to further fuel genuine Antisemitism at the expense of Jewish people globally. Zionism is also an inherently fascist ideology. The ethnic cleansing of the native people of Palestine has always been fundamental since it's inception as a colonialist movement.
Adi Callai, an Israeli, does a great analysis of how Antisemitism has been weaponized by Zionism during its history.