Like Hawke said it seems like the graphics card or driver crashing. Very hard to troubleshoot, especially when it's random. Bazzite probably already has very recent drivers, there's this post on the bad website listing some things to try. This stuff can lead to superstitious thinking, with people changing something, rebooting to have it work fine for a while then they post that change as if it fixed it.
God speed.
lol. Nicholas Kristof was in Beijing at the time, his contemporaneous article was critical of China and the CPC, but said "There is no massacre in Tiananmen Square, for example, although there is plenty of killing elsewhere." The original article is paywalled, but here is a 2004 interview where he repeats that no one died in the square, and sticks to his death toll estimate of 300-800.
The Chinese Red Cross deny saying that, so I mean insert your own conspiracy for that one. No idea who the Swiss Ambassador was at the time, the reference is to a book.