The University of California at Berkeley played down news last summer that it had installed an “escape hatch” from protesters in the chancellor’s office. The term was “the concoction of a 19-year-old headline writer,” a university spokesman said, referring to the student reporter who broke the story. “It’s a door,” the rep said, later adding that campus security thought it was “beneficial” to have more than one exit.

But internal emails we’ve seen show that a staff “deeply disturbed by [recent] occupations” did build the exit...