Here in the West we take the right to protest quite for granted, as this post demonstrates :)
Not ragging on you at all, really, but who exactly would the Chinese protest to? How would they do so? And what would prevent them from being jailed or worse for their efforts?
Although I'm not sure who would bother to do so...you can go to a government office and file a complaint without fear of being whisked off to a secret prison. Its if you're becoming a successful organizer of activists that you may end up in trouble.
I know expats who are uncomfortable protesting openly against China because of this - to protest against China is to side with the West, and thereby tacitly support this sort of boogeyman tactic.
http://news.bbc.co.uk/1/hi/world/asia-pacific/8607769.stm
http://www.theglobeandmail.com/news/world/chinese-dissident-...
http://www.guardian.co.uk/world/2008/sep/24/nobelpeaceprize....
http://en.wikipedia.org/wiki/List_of_Chinese_dissidents#Chin...
Chinese dissidents seem to be in the news quite a lot to me, in fact it would seem part of the west's objections is due to the voices of some immigrant Chinese.
It's curious how Bush-bashing gets automatic upvotes even when it's completely irrelevant (in this point HN isn't much different from reddit).
The US has the moral high ground with regards not blocking Dropbox, Google Groups, Blogspot, etc wholesale within the country, but China has the moral high ground with regards not invading foreign countries simply because "when you can you should". As thiopental wrote: "It's futile to expect others to adhere to your moral standards (here: truthfulness) when they think you should clean up your own act first."
As for the business restrictions, what can you do? I do admire companies like Google that can take a moral stand against Beijing's censorship.