The Buddhists were protesting Attack against religious discrimination by the regime of the Roman Catholic President Ngô Đình Diệm .

At the time , the Bình Xuyên was licensed Preventing_or_letting with controlling Control the national police by Emperor Bảo Đại , and Prime Minister Ngô Đình Diệm issued an ultimatum for them to surrender Surrendering and come Arriving under state control Control .

A year later , Bảo Đại would be deposed Change_of_leadership by his prime minister , Ngô Đình Diệm , creating Creating the Republic of Vietnam .

It came less than three months after Minh 's junta had themselves come to power in a bloody coup against then President Ngô Đình Diệm .