Feldman: Harvard was divided against itself. Trump’s attacks have changed that.

A year can make a transformational difference in the life of an institution.

That’s what has happened at Harvard, where students and faculty gave President Alan Garber a standing ovation at commencement Thursday — just a year after protests disrupted graduation ceremonies when hundreds of students walked out.

A year ago, student speakers denounced the university’s administration and its trustees, who were sitting behind them. On Thursday, the speakers expressed pride in that same...