Right after September 11, 2001, there weren't really any blogs in China, but there were a lot of Chinese chatrooms - and there were a lot of conversations in which Chinese netizens were saying things like, 'served them right.' That was definitely not the official Chinese government policy - which condemned the terrorists.
I lived in China for 9 years straight. I saw how my Chinese friends benefited and gained much more freedom to determine the course of their lives, their jobs, their creative works, and their identities over the course of a decade. Much of this increased freedom is thanks to economic engagement by the West.
It's much easier to force intermediary communications and Internet companies such as Google to police themselves and their users than the alternatives: sending cops after everybody who attempts a risque or politically sensitive search, getting parents and teachers to do their jobs, or chasing down the origin of every offending link.
There isn't much question that the person who obtained the WikiLeaks cables from a classified U.S. government network broke U.S. law and should expect to face the consequences. The legal rights of a website that publishes material acquired from that person, however, are much more controversial.
When U.S. commercial interests press the Chinese government to do a better job of policing Chinese websites for pirated content, a blind eye is generally turned to the fact that ensuing crackdowns provide a great excuse to tighten mechanisms to censor all content the Chinese government doesn't like.