From OneWorld US (link):
Executives at Yahoo’s annual shareholders meeting Thursday turned down a request from the human rights group Amnesty International, which is demanding the world’s most visited Web site stop censoring the Internet and referring dissidents to the Chinese government.
“If you go to Yahoo China and put in the words ‘democracy,’ ‘human rights,’ or ‘Tiananmen Square’ into their search engine the results that come back are totally censored,” said Amnesty’s Anthony Cruz, who addressed the meeting.
See also Amnesty International USA Challenges Yahoo Management at Annual Meeting by Amnesty International USA