You would be mostly right. The Left was fine with Israel being a state, at least until 1967, when LBJ took them as a US clients after the French bailed out. This pissed off the Soviets and the propaganda campaign began, and all the useful idiots on the 'New LEft' lined up like good lil puppets and have been obedient lil parrots ever since. It is directly linked to the Soveits leading the 'anti-war movement' around by the nose from the 1960's 0nward.
After the reunification of Germany, 1989 surveys indicated that there was much more anti-Semitism in West Germany than in East Germany. This was a fallacy arising from the distinction between anti-Semitism and anti-Zionism. Since then, Eastern German "anti-Zionism" has merged with Western German...
jcfa.org
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