Question for Chinese students of this reddit

Are you guys aware of Tiananmen Square and if so did you learn about it before or after coming to the U.S.?

To be clear, this is not in any way shape or form intended to be an insulting or derogatory post. I'm just very interested in how fully this is censored because i recently learned that any website with tiananmen square is automatically censored on Chinese networks, which I was really surprised to learn!

Edit: thanks for your responses everyone, it was really interesting learning more about this!