Actually according to Chinese media this crack focuses on eradicating pornography. Now, it's true you can get any DVD in China including 'subversive' movie (like '7 years' with Brad Pitt) , but they simply don't sell porn in those shops, it's a line they never crossed. Chinese people get their porn from the internet, mostly through torrents. As for the "china does nothing" part. I think you need to understand just how poor China is. Despite media hype - this is an extremely poor country with tons of problems and the undermanned underpaid police has much more important stuff to deal with than people copying DVds

In China you can easily switch to google.com and get the same results as the rest if the world. You can search google.com in Chinese. Bing does not allow you this luxury if you are from China. It switches to English and changes the background picture but gives you the same Chinese government results if it knows your IP is from China. BTW- Chinese people know about Tiananmen They have satellite dishes with Taiwanese channels that spend 50% of their air time criticizing the mainland (the other 50% is sex and celebrities)