My experience from having lived there, acquiring a Chinese wife, and having Chinese H1-B visa coworkers is that they pretty much swallow the CCP propaganda hook line and sinker. The few that I have asked either don't know about Tienanmen Square, or deny that it ever happened. They are also rather unaware of the differences between living in China and elsewhere in the world as far as individual freedoms go. This is mainly because they (as most here) have never had occasion to test the limits of those freedoms.