Phan Bội Châu
Emperor Khải Định's unpopularity reached its peak in 1923 when he authorized the French to raise taxes on the Vietnamese peasants, part of which was to pay for the building of his palatial tomb, and which caused a great deal of hardship. He also signed the orders of arrest against many nationalist leaders, such as Phan Bội Châu, forcing them into exile and having their followers who were captured beheaded.