Activists and US politicians urge UN human rights chief to release a report on the region that is home to Uyghurs in China
Overseas Chinese companies' hiring of Chinese firms is government's way of handling security without a third country's interference, experts say.
Religious freedom advocates voice concern about the persecution of Uighurs; China rejects accusations.
Some experts say the country's policy in Xinjiang is converting Uighurs and other native ethnic groups from their pastoral and peasantry lives into state-controlled wage-earners.
Tohti, a well-known writer in Xinjiang's Uighur community, was arrested last year and taken to the controversial internment camps for 're-education'.