In China’s northwestern Xinjiang region, more than one million ethnic Uighurs are believed to be held in internment camps. The authorities call them "re-education through labour camps", but victims say the reality is forced indoctrination for Uighurs held in alarming conditions. From China to Canada, via Turkey and France, our reporters Angélique Forget and Antoine Védeilhé investigated the plight of the Uighurs and gathered rare testimony. This is their exclusive report.