Yes - we know this. We've known this for a long time. The question is what now? Western nations have shown no political will to stand up to China.
When the Holocaust was happening, no one cared. The holocaust was stopped because it aligned with a different interest: to stop nazi Germany. The holocaust was only to make the nazi look bad. Otherwise no one cared about Jews either.
I never really read timeline details about the concentration camps in WW2.