“The Encampments” hits theaters with the kind of PR money can’t buy. One of the voices of resistance to the war in Gaza featured in the new documentary — which goes behind the scenes at the protests that roiled the campuses of Columbia University and other colleges last spring — is Mahmoud Khalil.

A group of Columbia University students on Wednesday chained themselves to campus gates to protest the arrest of pro-Palestinian activist Mahmoud Khalil.

The Encampments,” a new documentary, follows Mahmoud Khalil and other student activists as they fight for divestment and Palestinian liberation.