I think you got lost in feeling angry for some footage that shows injustice but forgot we were debating evidence for concentration camps.
Injustice happens everyday and everywhere. Chinese people feel the same and we have our channels and ways to address those issues, otherwise there wouldn't be a functional society, which is a fact no matter what you say about China.
And you are wrong to think Chinese people just eat up what injustice that are imposed onto them. Chinese people protest always and rebel always in the past and now. You need to teach yourself more of China's history and Chinese people before rushing emotional comments.