The answer is addressed free speech and student's rights.
The movement was called Free Speech Movement (FSM), the movement began in 1964, when students at the University of California, Berkeley protested a ban on on-campus political activities. The protest was led by several students, who also demanded their right to free speech and academic freedom. The phenomenon of the movement was inspired first by the struggle for civil rights and later fueled by opposition to the Vietnam War.
Earl Warren's court help secure equality for citizens of the United States by expanding civil rights, civil liberties and the power of the judiciary in a dramatic manner. The court for instance found segregation in public schools to be a violation of the 14th amendment and declared it unconstitutional
