Specifically concerning the camps in China, every single thread I've seen has a number of people defending it. It appears to be mostly commenters who greatly fear islam and/or Chinese individuals who support the current regime.
From an HN point of view, how do we support intellectual curiosity while at the same time holding a place for the people—all people—whose lives are affected by this? I don't know. For the time being, the only thing I know to do is keep calling people back to the site guidelines: https://news.ycombinator.com/newsguidelines.html. According to the guidelines, saying things like "I can't believe you support concentration camps" is not ok on HN, regardless of how strongly one feels about the topic. That's not a direct quote of anyone, but it's the sentiment the most aggressive commenters are jumping to when this story comes up, which it has frequently lately.