For a little background info on the censorship by China, just type “Google + censorship” in news.google.com. In one summary sentence, Google agrees to censorship asked by the Chinese government or they will block Google out of their DNS. (China, you’re making a huge mistake and this is the same reason why you couldn’t take off with your paper creation and other inventions cuz you keep slowing down others and suppressing individual acheivements.)
Now, see it yourself and you can see the difference.
http://images.google.com/images?q=tiananmen+square – US Google Search
http://images.google.cn/images?q=tiananmen+square – Chinese Google Search.