The anti-Vietnam War protesters who were spitting on returning veterans either during or after the war itself wasn't on the same scale and scope or consistency as reported anti-Semitic attacks, slurs, insults, threats or insinuations that force Jewish students at all these Ivy League universities to relocate to nearby hotels because they felt unwelcome.
The flagrant disrespect shown towards to Vietnam veterans by hippies/counter-culture types or ordinary Americans by spitting on them was low-scale, and more random then serious acts of actual anti-Semitic behavior or actions here on college campuses.