I asked a historian of women's issues, "in the 1920's, and recently, there were great strides for women's rights. Why did it fade away?"
The answer got was not one I expected. "It didn't. The media merely stopped reporting it."
Whether it is Tiananmen Square or Washington Square, if people can communicate, they can rally around a cause.
When there is a coup, what's one of the first things the leaders take over? Radio and television stations. In China, Internet phrases are banned. "Tiananmen Square" itself is forbidden speech.
This nation's founders added the First Amendment to the Constitution which, among other things, guarantees freedom of speech, the right to petition, and the right to peaceably assemble.