Opposition to the war within South Vietnam was demonstrated most dramatically by Buddhist monks, but students and academics also protested.
Includes helpful information on the Buddhist resistance in 1963, see especially pp. 194-243 in original edition.
Account of the 1963 Buddhist revolt, its origins and aftermath. See also later article by Roberts assessing the political potential of the Buddhists: Roberts, Adam , The Buddhists, the War and the Vietcong [3] World Today, 1966, pp. 214-222 . Both articles now available online: http://www.jstor.org [4] (but only via contributing libraries).
Well known theorist of nonviolence puts the Buddhist case.
Links
[1] https://civilresistance.info/biblio-item/2007/making-quagmire
[2] https://civilresistance.info/biblio-item/1963/buddhism-and-politics-south-vietnam
[3] https://civilresistance.info/biblio-item/1966/buddhists-war-and-vietcong
[4] http://www.jstor.org
[5] https://civilresistance.info/biblio-item/1967/lotus-sea-fire