The redditor "Tienanmen Square massacre" narrative is flat earther levels of crank shit and needs to be recognized as such.
This shit has seriously gone on too long. People who continue to cling to the "10,000 dead crushed by tanks hosed i to the gutter" bs are cranks. It's jews control the banks, chemtrails, the earth is flat, the moon isn't real level of crank shit and unless you're feeling very indulgent and someone is asking in good faith it can be dismissed as equally serious to that kind of crank shit.
Unnamed experts close to the intelligence community have confirmed that that they've seen "solid evidence" of the massacre, but they can't show you because the only copies of the evidence are held by the millions of US MIA POWs still being held in secret Vietnamese prisons.