It would appear racism is part of the official Chinese line.
Of the 800 posters who weighed in on the issue, only 10% (80 people) posted anything "racist, sexist or both." (What % of the comments were merely "sexist" wasn't reported). Either way we're talking just a few people here. ....Hardly anything to get too exercised about.
Now if a gov't official made similar comments we'd have a story.