The sight of five burly guards blocking the way out of her dorm filled Ren Liping with rage.
It was 3 a.m. on a recent Saturday and the thin, bespectacled 26-year-old Chinese graduate student was exhausted. Her mind raced back to earlier in the day when she had tried once again to publicly protest her alleged rape. Again, the police had stopped her and held her at a station for hours. Again, she was escorted back to campus.