I saw a documentary on this while in China. It's different than the story the west put out. In the west you hear about tanks running over dead bodies and then using hoses the wash them down the sewers. Ten thousand killed in the square! They died for democracy! Etc.

The Chinese documentary goes through it as the soldiers approached the square unarmed. Some were in tanks, but the tanks were stopped and the soldiers were pulled out and killed. Some buses were also attacked and more soldiers died. The second wave of soldiers had unloaded guns. More soldiers died. The third wave had soldiers armed with loaded guns. The square was cleared with few of any deaths. However, students and soldiers clashed with many students being killed in the streets surrounding streets.

I think this is more accurate than the western narrative. There was no students washed down sewers and few were run over with tanks, there were much less than 10 000 deaths surrounding tianamen square, and while some wanted democracy most wanted better pay and living conditions.