Tiananmen Square was a great tragedy. I don’t think there is agreement on how many died, but some say as many as 10,000. The Chinese people protested against their government, and the government struck back, and people died.
Here in America, we gave only a half-hearted attempt at the same thing. On Jan 6 people showed up to protest our loss of democracy. The government struck back and shot Ashli Babbitt. That ended our Tiananmen Square and we continue to be ruled by China, as far as I can see.
Maybe Cuba will be more successful.
As for Cuba...I can't say I'm optimistic. Far too many there depend on the government.
The US is a Republic. Not a democracy.