Anyone who was at Columbia University in the spring of 1968 cannot help but see a reprise of those stormy‚ fateful and thrilling days in what is happening on the Morningside Heights campus today. But there is a troubling and significant difference. If the students back in ’68 were divided into rebellious‚ longhaired pukes and conservative‚ close-cropped jocks‚ with a lot of undecided in between‚ the current protests at Columbia — and at the growing number of other campuses to which...