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In Saigon, Thích Quảng Đức, a Vietnamese Mahayana Buddhist monk, publicly self-immolated in 1963 at a major intersection in protest against the persecution of Buddhists by South Vietnam's Roman Catholic president, Ngô Đình Diệm. Đức's sacrificial act became an international symbol of the oppression faced by Buddhists under Diệm's regime and sparked widespread protests and global condemnation.