The Hong Kong Alliance in Support of Patriotic Democratic Movements of China is best known for organizing an annual rally and candlelight vigil remembering those killed in the bloody 1989 crackdown on pro-democracy protests in Beijing’s Tiananmen Square, reports Associated Press news agency.

The group said in a statement Saturday that seven of its 14 remaining steering committee members had decided to step down in the face of “growing political and legal risks.” Of the seven members remaining, three are currently in jail for protest-related activities — chairman Lee Cheuk-yan as well as vice chairmen Albert Ho Chun-yan and Chow Hang-tung, reports the news agency.

Hong Kong, a former British colony, was handed over to China in 1997, and the Basic Law preserves its autonomy as a Special Administrative Region under the principle of “one country, two systems”.