I can't help you there. People don't care about facts when they get in the way of a fun activity like China-bashing.
I recently made a comment about how boomers, as a generation, are the most blessed generation alive in American history. I understand the context and phrasing may have been inappropriate and my original comment garnered a mix of votes, but in the following discussions I was universally downvoted for saying things that are objectively true.
People who think that this kind of behavior is unique to reddit are absolutely delusional.