In America activists can potentially sue/appeal for to free those wrongly imprisoned, and the incarceration rate is about 0.75%. The Uyghurs, by contrast, are currently imprisoned at a rate of minimum 6% (calculated via lower estimate of concentration camp size and upper estimate of Ughur population in China), another 6% of their population is matched by live-in Han Chinese family monitors, and no one is even pretending that they broke any laws.
Yes but African Americans make up 34% of the 6.8 million that are incarcerated. Maybe the rules causing this disparity are not written down anywhere like in China, but it's certainly ingrained into American society in practice.
