I like the following comments from the link that MK posted...
Ulywang
If you have been in China that long and know the people so well, you should also know those rabid comments online don’t have much real bearing on the thoughts and behavior of those Chinese around you. It’s easy to cry wolf in situations like this anywhere in the world, but an outrageous case like the Brit brute and angry online voices rarely translate into a nationwide xenophobic trend. Again, you should already know that.
+
Don’t you “China watchers”ever get tired trying to read and make sense of all those Chinese netizens’ online comments? Yeah it’s a reflection of what “the people” think and how they may one day act, blahblah, but if you haven’t got the sense by now that these are mostly just a bunch of frustrated, bored young people blowing off steam and moaning for nothing, then there is something wrong with your China watching methodology.
How many times have they REALLY, I mean really, influenced Chinese policy making?
there's a lot of truth in what she says, methinks.
That said, it's ALWAYS good to be on good behaviour when out on the piss.