The similarities between today and 1968 are apparent: calls to divest; university halls being taken over; the establishment challenged; Democrats fearing that their convention at Chicago could cost them an election. Yes, 1968 is calling and it wants its protest movement back. Yet the recent global outburst of antisemitism shows this is no ’60s redux.

“They are like we were in the ’60s: passionate, caring, and at least they’re not on their cellphones all day,” a friend observed of the protesters the other day. On NPR, a Columbia University professor who teaches — preaches? — a course on the anti-Vietnam protest movement makes the same point.