On Sunday, thousands of demonstrators marched in Hong Kong to mark the upcoming15th anniversary of the Tiananmen Square killings of pre-democracy activists which took place on June 4, 1989. The march came as news spread that three prominent pro-democracy radio hosts had quit their jobs and fled Hong Kong apparently under pressure from China. The group Hong Kong Human Rights Monitor accused China of threatening the lives of the journalists. One of the hosts told the New York Times “As long as I keep my mouth shut and don’t talk to you, I’m safe.” Meanwhile in mainland China police have reportedly been placing large numbers of democracy advocates under house arrest in preparation for the anniversary on Friday of the Tiananmen Square killings.