中国民主化運動
Each of the 21 students faced diverse experiences after their arrests or escapes; while some remain abroad with no intent to return, others have chosen to stay indefinitely, such as Zhang Ming. Only 7 of the 21 were able to escape. Some student leaders, such as Chai Ling and Wuer Kaixi, were able to escape to the United States, the United Kingdom, France, and other Western nations under Operation Yellowbird, which was organized by Western intelligence agencies such as MI6 and CIA from Hong Kong, a British territory at the time. According to "The Washington Post", the operation involved more than 40 people and had its roots in the "Alliance in Support of Democratic Movements in China" formed in May 1989. After the Beijing protest crackdown, this group drew up an initial list of 40 dissidents they believed could form the nucleus of a "Chinese democracy movement in exile".