Now I live in Canada and have stayed outside of the Chinese censorship for almost 6 years now. My opinion have changed quite a lot. I used to believe the idea of communism brainwashing, but now I have a feeling that this sort of brainwashing and censorship goes both ways. Remember the famous tank man? It's one of the important icon of this event and was marked as a symbol of the Chinese government's oppression and brutality. That image/video was widely spread in the western medias. The majority of the public believe he was rolled over by the tank, because you know, Chinese government are evil. The full video was posted earlier on Reddit. Many was shocked to find out that the tank tried to drive around him and eventually stopped until the tank man was pulled away by someone else. Why the mainstream media never showed the full video to the public? Because it contradicted with the brutal image of Chinese government/military that they were trying to portrait to the public. Propaganda is a funny thing. Bearing stereotype and ignorance, both side will hold a strong belief that they are right.
I am by no means saying Chinese government is innocent. They pretty evil imo. I am just trying to say is that it is very hard to figure out what really happened now that both sides are extremely biased and ignorant towards the other end. I personally believe there were students killed and injured during the military intervention, but I am strongly skeptical against the massacre claim as there was no solid evidence so far. The truth probably lies somewhere in between the stories.