 When high school students demonstrated, Diệm arrested them as well; over 1,000 students from Saigon's leading high school, most of them children of Saigon civil servants, were sent to re-education camps, including, reportedly, children as young as five, on charges of anti-government graffiti.Diệm's foreign minister Vũ Văn Mẫu resigned, shaving his head like a Buddhist monk in protest.When he attempted to leave the country on a religious pilgrimage to India, he was detained and kept under house arrest.