President Bok's celebrated stroll through the Yard in the midst of the first major demonstration against the Corporation's South African investments did not earn him brownie points for talkativeness. Surrounded by a group of students asking him for comment on the Corporation's upcoming decision, Bok merely smiled a fixed smile and proceeded towards Massachusetts Hall, where more demonstrators blocked his entrance to the building. Smile undisturbed, he strolled across Mass Ave., where a University police car whisked him away over crowds who tried to block the car's exit. "It's just another day in the life of a university president" Bok quipped as the police guard shuffled him through the chanting crowd.