I heard they rounded up tank man. After some brief tortures they killed him. The protestors bodies were slushed by tanks, pushed into a pile, burned ,then washed away.
Text
Declassified: Chinese official said at least 10,000 civilians died in 1989 Tiananmen massacre, documents show
https://hongkongfp.com/2017/12/21/declassified-chinese-official-said-least-10000-civilians-died-1989-tiananmen-massacre-documents-show/
Video
Better:
Archive: Chinese troops fire on protesters in Tiananmen Square - BBC News 0.03.34 hr
https://www.youtube.com/watch?v=kMKvxJ-Js3A
Best:
[Documentary] Tiananmen Square Massacre 1989 in China 1.18.40hr
https://www.youtube.com/watch?v=SeoMn1DeUek