Sanitized search
Image 1 of 42 from a Google image search for Tiananmen Square on google.cn.
Image 1 of about 14000 results for the same search on google.com.
[Courtesy of a Slashdot post]
It appears from this and a few other quick searches I tried, that Google's capitulating to China and "filtering" their results amounts to only returning results for pages that are located inside the Great Firewall.