there are a lot of self-hating Jews with a death wish in Israel, mostly left wing, and while a lot of racist right wing Jews throw out the 'antisemite' card over any criticisms at all, the claim that Israel has no right to exist at all can certainly be classified as antisemitism. Also keep in mind there are ultra-Orthodox sects that oppose 'Zionism' as well.
An historical perspective on the 'new Left' and its antisemitism. It actually began rising on college campuses in the 1960's; this is old news.
Being Leftist and Anti-Semitic in Germany - Susanne Urban
www.jcpa.org
"Common Ground between Right and Left
Today's German anti-Semitism is deeply connected to the Nazi period and the wish to expunge guilt and responsibility for dealing with it. Right-wing extremism, neo-Nazism, and extreme conservatism seem "naturally" linked to denial or minimalization of the Holocaust, or calling for a new one. As elsewhere in Europe, a relatively new "brotherhood" has emerged in Germany between the extreme Right and fundamentalist Islam.
Anti-Zionism, however - which is not mere criticism of Israeli policies, but the denial of the Jewish people's right to live in their own state - also links leftists and rightists. Since the Six Day War of 1967, both the extreme and the mainstream Left in Europe have shown strong anti-Zionist tendencies, not always distinguishable from anti-Semitism. Although leftist anti-Zionism seemed to decline after the fall of Communism in 1990, it was reanimated by the Second Intifada and the antiglobalization movement, which is today a main source of leftist anti-Semitism.
In a May 2002 survey in the weekly magazine
Der Spiegel, 25% agreed that "what the state of Israel does to the Palestinians is no different than what the Nazis did during the Third Reich to the Jews."2 A new scholarly book analyzes how deeply anti-Semitism and anti-Zionism are rooted in German society.3 Since 1989, united Germany seems to stand on two main pillars: a strong anti-American and anti-Israeli attitude.
....
Student Radicalization
During the Six Day War, the New Left definitively transformed its hitherto moderate pro-Arab positions into full support for Arab states and the Palestinians, and its fragile pro-Israeli attitudes dissolved into anti-Semitic slogans thinly disguised as "anti-imperialist" criticism of a "fascist state."
After 1967, however, not only the radicals but large parts of the German Left turned their backs on Israel. This went hand in hand with protests against the Vietnam War, against the conservative mainstream in Adenauer's Germany and afterward the "Great Coalition" that was headed from 1966 by Chancellor Kurt Georg Kiesinger, a former member of the Nazi Party.6 The New Left also idealized Communist China and Ho Chi Minh, despite their involvement in mass murder against their own people.7
Well-known intellectuals who were more moderate leftists tried to dissuade the New Left from its extreme positions. Ernst Bloch, Jean Amery, Herbert Marcuse, Iring Fetscher, and Jean-Paul Sartre argued with the radicals and discouraged blind solidarity with the PLO, as opposed to legitimate criticism of Israeli policies. They warned that notions of Israel's annihilation were intolerable and linked to National Socialist ideology. However, they were not heeded by the radicals.8"
More at the link. Pseudo-intellectual 'academics' in U.S. universities and colleges were always slaves to Euro commie fads.