Gitlin subtext: Lots of young Jews are leftists, leftists hate Israel, young Jews are therefore forced to choose between being popular with their leftist friends and their ties to the Jewish community. Answer: abandon Israel for leftism. In fact, however, his answer is a symptom of the very problems he identifies lack of Jewish identity among young Jews. If young politically left-wing Jews were more grounded in their Jewishness, they wouldn't be so left-wing to begin with.
from the article: Rethinking Jewish American deterrence