11 June 1963, Thich Quang Duc, a Buddhist monk from Vietnam, burned himself to death at a busy intersection in downtown Saigon to bring attention to the repressive policies of the Catholic Diem regime that controlled the South Vietnamese government at the time. Buddhist monks asked the regime to lift its ban on flying the traditional Buddhist flag, to grant Buddhism the same rights as Catholicism, to stop detaining Buddhists and to give Buddhist monks and nuns the right to practice and spread their religion.While burning Thich Quang Duc never moved a muscle.
Photos of his self-immolation were circulated widely across the world and brought attention to the policies of the Diệm regime.
After his death, his body was re-cremated, but his heart remained intact. This was interpreted as a symbol of compassion and led Buddhists to revere him as a bodhisattva, heightening the impact of his death on the public psyche.