"Developments in Afghanistan, Angola and Central America in 1988–9 were each regionally highly significant. In combination, these developments contributed greatly to a reduction in international tension. At the same time, they had far less of an impact on global attention than developments in the heartlands of the Communist bloc. These developments revealed two different tendencies. The brutal suppression in 1989 of pressure in China for political liberalisation, notably with the massacre of student protesters in Tiananmen Square in Beijing in April (but not only there), was central to the maintenance of a Communist bloc in East Asia. The decision to act followed tension within the leadership, with Zhao Ziyang, the General Secretary of the Party, being sympathetic to the protesters, whereas the Premier, Li Peng, wanted to use force against them. Ultimately, Deng Xiaoping backed Li. The People’s Daily referred to the pro-democracy movement as an ‘anti-Party and anti-Socialist upheaval’. It was seen as a challenge to the position and legitimacy of the Party leadership."
January 1, 1970
https://en.wikiquote.org/wiki/1989_Tiananmen_Square_protests