Those Uyghurs had and have rights whether the Chinese government knows it or not. Bad things happening doesn’t make those things suddenly not-bad.
Point being, they’re only intrinsic because we say so.
The sky is only blue because we decided on the word “blue” for that frequency of light, and there’s plenty of other things that are the way they are just because we say so.
And if this isn’t just a “I just don’t think ‘rights’ are the correct word” semantic argument for you here, please refer back to the first two sentences.