Additional reading:
BBC Reporters, CBS News, and New York Times reporter who were actually in the city the day it happened who report mainstream news got it all wrong. BBC Source | CBS Source | NYTimes Source
Readings into what happened with the protests:
https://redsails.org/another-view-of-tiananmen
https://www.liberationnews.org/tiananmen-the-massacre-that-wasnt-2/
This person should watch The Gate of Heavenly Peace, and honestly a lot of Hexbears probably need to see it too.
It's not that the documentary is "correct" in everything that it says, but it's thorough at over 3 hours long, and had plenty of criticism from "both sides" (yeah, I'm an enlightened centrist :D)