J'utilise pas le site/API officielle, mais ça m'a l'air d'être OK en l'occurrence.
The Tiananmen Square protests of 1989 were a series of pro-democracy demonstrations led primarily by students, intellectuals, and workers in Beijing, China. The movement, which lasted approximately seven weeks (April 15-June 4), called for political reform, freedom of speech, and government accountability. On June 3-4, 1989, the Chinese government declared martial law and deployed military forces to clear the square, resulting in significant casualties. Estimates of deaths range from hundreds to thousands, though no official figures have been released.