You’re actually getting really close to the truth of it all when you mention how media in the West is corporate dominated, you just took that to an odd conclusion and think that there is censorship of criticism against China, and not the opposite. The truth is that the US government pays media billions of dollars to drum up anti-PRC narratives, as they want to pressure China into capitulation and opening up its markets for foreign dominance and not to its currently limited and highly controlled wiggle room. Moreover, the idea that every channel that is positive about China is propaganda is silly, when there’s known support for paid anti-China propaganda.

The CPC’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 in western media, such as BBC, 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, the CPC’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]

In your Wikipedia blurb, you mention that the CPC censors articles like these that report on a clearly mythologized version of events. Quite right, they do, because they don’t want foreign governments trying to destabilize China so that they can take advantage and plunder their industry freely. The alternative is to just let western media do as it likes, and be subject to yet another US-sponsered coup.