"'Hope I die before I get old,' sang The Who's Roger Daltrey about a half century ago, in perhaps the ultimate cultural reflection of antagonism between generations. It seems to never change: Older people think the youth are gullible and confused, and the youth think the old are 'out of touch.' Rarely has this phenomenon been on starker display than now.

"Many older Americans have watched with amazement and horror as pro-Palestine protests gathered steam on college campuses, veering toward what seemed to them as bizarre support for Islamist terrorists and even hatred of America itself. Now some universities -- including Columbia where I was a grad student -- have called in the cops. There is handwringing and angst about where to draw the line on free speech.

"It shouldn't be so hard. Whether the students are right or wrong is immaterial to the question of whether they should be allowed to continue the protests. The reasons to break up some of the protests are clear."

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