Think of a nationalist Chinese version of Little Green Footballs and you get the picture:

忿青 fen qing * - "angry youth" - is the term given to Chinese Netizensof a self-righteous and aggressively nationalist tendency. They aremostly young males with nothing better to do with their time than hangout online. They infest the blogs and bulletin boards of the ChineseInternet. And some of the ones with slightly better foreign languageskills stalk the foreign China blogs, looking to pick a fight wheneversomebody dares to make an observation that appears to be "critical" ofChina, or challenges the 'orthodox view' on hot topics such as - well,you know, "The Three T's". If you visit The Peking Duck, one of themost popular laowai China blogs, you will often find its commentthreads overrun with these dingbats.

I often refer to the fenqing phenomenon as the Chinese CommunistParty's 'blowback' from the years of propagandizing it subjects itschildren to during their schooling. The government occasionally seeksto exploit their hot-headed and xenophobic impulses by whipping uptheir indignation against a particular country to make a diplomaticpoint (in an exceedingly undiplomatic way!): the French have been onthe receiving end of this a lot over the past year. However, this kindof sentiment is hard to direct and control, and it is more often anembarrassment or an inconvenience to the government than a help;indeed, it could potentially become a threat to the government.

On the other hand:

it’s easy to overstate the importance of thefenqing. The fenqing are to most patriotic Chinese youth what themeth-riddled KKK rednecks on Jerry Springer are to the Republicanparty. They are wildly overrepresented on the internet, and the webgives this whacked-out fringe a powerful megaphone that amplifiestheir voices and adds to their self-importance.

More here.