The Berkeley Free Speech Movement Mario Savio, a student leader at the University of California at Berkeley and a Freedom Summer volunteer, stands among demonstrators sitting in at Sproul Hall on December 3, 1964, to protest university curbs on free speech. A day earlier, Savio had declared: “There’s a time when the operation of the machine becomes so odious . . . you’ve got to put your bodies upon the gears . . . and you’ve got to make it stop.” AP Photo/Robert Houston