Beijing is accused of exploiting weak terror laws to suppress information in Xinjiang.
The three students get up to six years in jail on charges they murdered a Han Chinese schoolmate.
Several Uyghurs are rounded up after incidents in southern and central Xinjiang region.
A second violent incident in three days is reported in Xinjiang.
Chinese farmers use government subsidies to edge Uyghurs out of land in Xinjiang.
Uyghurs say midnight police searches for 'illegal religious materials' are unrelenting.
Authorities put a stranglehold on reports of violence between Uyghurs and Han Chinese.
Security personnel choose a hospital outside Beijing for Ilham Tohti.
Uyghurs say the clampdown is targeting Muslim families in the Xinjiang county.