A Columbia University graduate who led protests last year has been detained by I.C.E. Even though he is a green card holder. On this week’s On the Media, hear why the case has conjured comparisons to the Red Scare of the forties and fifties. Plus, a look at the years-long campaign to dismantle press freedoms in the United States.

[01:00] Host Brooke Gladstone speaks with Corey Robin, distinguished professor of political science at Brooklyn College, on the arrest of Columbia University graduate student Mahmoud Khalil, and the parallels between now and the Red Scare of the forties and fifties.

[16:49] Brooke continues her conversation with Corey Robin, author of Fear: The History of a Political Idea. Robin explains how free speech crackdowns can change our political culture and tear at the fabric of the soul. Plus, how Humphrey Bogart betrayed the ideals of his most celebrated film.

[27:00] Host Micah Loewinger speaks with David Enrich, business investigations editor for The New York Times and author of the new book, Murder the Truth: Fear, the First Amendment, and a Secret Campaign to Protect the Powerful, on why a Supreme Court case that’s protected press freedoms for over half a century may now be in danger.