Given that they're regularly labeled as "pro democracy protests", I'd venture to say that most people outside the Great Firewall don't know much about it either.

Ni juede zhongguoren bu zhidao tiananmen square 1989 de shihou zuole shenme?

That's HSK2 being generous, if you had to plug it into Google Translate, how can you say you know more than the people who speak the language and live there?