After a protest clip went viral, a teenager’s life was torn apart by threats that sent her and her family into hiding. Plus, a book on citizen journalismBefore 24 July, a person I will call R was preoccupied with the ordinary routines of teenage life: experimenting with makeup, grumbling over mathematics homework and hanging out with friends at a tea stall.That month, as the fever of student protests spread across the country, the 15-year-old watched on her phone as young people poured into Jan