Half the comments in HN are flagged or downvoted. Is it a sign that the HN crowd feels uneasy and divided about China's rising power? Meta comment: wonder if my comment will get downvoted too when it's just asking a question meant to start an intelligent discussion.
This ensures that HN provides a semi-curated discussion weighted towards technical and scientific issues, and against geopolitical or socioeconomic topics, for example.
That isn't a statement that these topics shouldn't be discussed, just that they aren't necessarily appropriate for discussion here.