CNN —Columbia University’s graduating class of 1968 was no stranger to protests. Graffiti on a blackboard at some point after protests began on April 23, 1968 at Columbia University in New York. Activist Mark Rudd, center, president of Students for a Democratic Society, addresses students at Columbia University on May 3, 1968. Students supporting the Columbia University sit-in and counter-demonstrators engage in a short-lived free-for-all outside Low Library at Columbia University on April 29, 1968. Although it took Columbia University years to recover and reestablish trust between the administration and the student body, several key changes emerged after the 1968 protests.

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