Hexbear’s stance, and most Marxists in general, on Tian’anmen is that hundreds of protestors and PLA officers were killed in Beijing that day as the PLA advanced towards the square, but that the square itself was evacuated peacefully, which matches leaked US cables and the CPC’s official stance on what it calls the “June 4th incident”. This is a rejection of the commonly reported story of 10,000 people being killed on the square itself, which originated from a British diplomat’s cable. Said diplomat was later confirmed to have evacuated well before.

I reiterate, Hexbear’s stance isn’t that the massacre didn’t happen, but that Western nations intentionally sensationalize the quantity of deaths and the character of the events. This is also why Western Nations don’t frequently report on the South Korean Gwang-Ju massacre that occured around the same era, where the South Korean millitary murdered thousands of High School and College students protesting against Chun Do-Hwan’s dictatorship. All of what I said is backed up by the Wikipedia page for Tian’anmen Square Protests and Massacre, such as Alan Donald revising his estimate from 10,000 to the low thousands yet BBC continuing to report the 10,000 figure:

In a disputed cable sent in the aftermath of the events at Tiananmen, British Ambassador Alan Donald initially claimed, based on information from a “good friend” in the State Council of China, that a minimum of 10,000 civilians died,[237] claims which were repeated in a speech by Australian Prime Minister Bob Hawke,[238] but which is an estimated number much higher than other sources provided.[239][240] After the declassification, former student protest leader Feng Congde pointed out that Donald later revised his estimate to 2,700–3,400 deaths, a number closer to, but still much higher than, other estimates.[241]

As for the DPRK, I’d have to see what you mean as an example. The common consensus is that the DPRK has a well-documented “defector storytelling industry” where defectors are paid for outlandish stories, and due to their unverifiability gets passed on as truth. A good documentary on this subject is Loyal Citizens of Pyongyang in Seoul. Therefore, really, very little can be trusted on the subject. Brutal executions being reported such as one official being eaten to death by 120 dogs end up being reported uncritically, despite said official turning up alive later and the story originating from a Chinese satirical column, akin to the Onion.

This is where the joke of “Juche Necromancy” comes from, because supposedly executed officials regularly turn up alive.