Look at the comments on this random NBC News article. Then imagine them on every single article[0] about this story. The reddit thread[1] reached 3500 comments, and the top comments are all in the same vein: cries for punishment, stories about how awful Chinese tourists are, stories about how awful Chinese people in general are, etc.
Well, then these types of comments are coming from both the East and the West, and it would be unfair to say that the comments from the West stem from a desire to hate a "faceless other" while the ones from the East are more legitimate somehow. The overboard comments from both sides are uncalled for.
Yes, you're right. I do think comments from both cultures are reprehensible, but the ones from other Chinese people do not seem to carry the same prejudice — at least from the translations I've read. You don't, for example, have other Chinese people calling the 15 year old boy "Ding Dong," as one of the NBC News commenters did.