Answer
The Catholic community in Vietnam was believed to have received preferential treatment from President Ngô Đình Diệm and Prime Minister Nguyễn Văn Thiệu, who were both Catholics. Diệm was a devout Catholic, and he appointed many Catholics to high positions in government and the military. Thiệu was not as devout as Diệm, but he also favored Catholics. This preferential treatment led to resentment among the non-Catholic majority in Vietnam.