Trump’s crackdown on university protests is casting a long shadow. Activists hope he’s also providing a spark.

At Columbia University, which has long borne witness to protests and dissent, the atmosphere has shifted under a new regime of policy changes ostensibly aimed at heightening security, according to CNN interviews with more than a dozen students and faculty.

​ At Columbia University, which has long borne witness to protests and dissent, the atmosphere has shifted under a new regime of policy changes ostensibly aimed at heightening security, according to CNN interviews with more than a dozen students and faculty. Read More Breaking News, Latest News and Videos | CNN