Photo of SAIGON, S. VIETNAM: South Vietnam's most powerful Buddhist leader, Thich Tri Quang (L) arose out of three years of obscurity 3/31 to demand the ouster of President Thieu. Tri Quang led a demonstration of monks, clerics, and laymen from an Quan Pagoda under manners demanding that Thieu resign. Tri Quang was credited for the overthrow of late President Ngo Dinh Diem in November, 1963.

A hardline Catholic, Diem led a government that oppressed Buddhists, imposing unequal taxes and demolishing worship sites. This resulted in the 1963 Buddhist Crisis, in which Buddhist leaders (shown above) publicly protested. (Bettmann/Getty Images)

Bettmann/Getty Images