The argument that resistance to the war should remain strictly nonviolent seems to me overwhelming.
As a tactic, violence is absurd. No one can compete with the Government in violence, and the resort to violence, which will surely fail, will simply frighten and alienate some who can be reached, and will further encourage the ideologists and administrators of forceful repression. What is more, one hopes that participants in nonviolent resistance will themselves become human beings of a more admirable sort. No one can fail to be impressed by the personal qualities of those who have grown to maturity in the civil rights movement. Whatever else it may have accomplished, the civil rights movement has made an inestimable contribution to American society in transforming the lives and characters of those who took part in it. Perhaps a program of principled, nonviolent resistance can do the same for many others, in the particular circumstances that we face today. It is not impossible that this may save the country from a terrible future, from yet another generation of men who think it clever to discuss the bombing of North Vietnam as a question of tactics and cost-effectiveness.
— Noam Chomsky, 1967, The New York Review of Books