Thích Trí Quang's 1963 campaign, in which he exhorted followers to emulate the example of Mahatma Gandhi, saw widespread demonstrations against the government of President Ngô Đình Diệm which, due to the influence of both Diệm's elder brother, the Roman Catholic Archbishop of Huế, Pierre Martin Ngô Đình Thục, mistreated and persecuted the Buddhist majority. The suppression of Buddhists' civil rights and violent crackdowns on demonstrations, along with the self-immolation of at least five Buddhist monks led to a US-backed military coup in November 1963 in which Diệm and Nhu were deposed and assassinated.