google.cn

When google.cn came out, I was in grad school. I did some basic searches to look for filtering and blocking. The most obvious was "tiananmen square"

Back then, the search gave pretty pictures, flowers, and everything was modern day. The google.com result gave something altogether different: destruction, and a man stopping a tank by will alone.

I just did the same search.

Google.com Image Search Result

Google China Tiananmen Square search

Google.cn search for Tienanmen Square.

In the first google.cn search, I used google's preferred spelling. In the second, bloggers.

The first shows a few images from the massacre. The second predominately shows the massacre.