Tremble and Obey.

30 years on from the Chinese state's brutal put-down of a student-led pro-democracy protest in 1989, ABC Australia looks back through its video archive to unearth never-before-seen footage captured by its team on the ground. A watershed moment in a post-Mao China, the Communist Party has sought to erase all public discourse and memory of that day, making this record all the more significant.