I have to admit that the speech right is more free in US and expressing one's views is human right, which I am using.
I can understand western people's views though we are in different cultures. I think such a discussion is useful because we can know more.
In fact, there are many policies to start Internet censorship, such as The NPC Standing Committee's decision on safeguarding Internet security... But the standard of censorship is still not clear. I think it is the problem.
If you see the history of Chinese Internet censorship, you will find that the censorship is much more like an administrative means. I think the architecture of Internet management is not different from US' and the difference is the standard.