can they openly criticize the establishment and discuss controversial topics like tiananmen square, tankman?

have you ever seen the full tank guy footage? here it is, if you’re curious: https://youtu.be/qq8zFLIftGk the man is able to stop in the street, climb on the tank, talk to the operator, and walks away completely unharmed

compare this to NYPD officers, who simply run protesters over: https://youtu.be/q-W-7WPWfE4