Well kiddo, in China, sometimes people feel like the leaders are not making the right decisions, and they want to tell them that it's not ok. They do this by protesting, which means they gather together and say things like "we don't agree with what you're doing," or "we want things to change."
But in China, the government doesn't really like it when people protest or disagree with them, so they sometimes try to stop them from doing it. This can mean arresting people, using violence, or even shutting down the internet and social media.
Some people are very brave and still try to protest anyway, because they believe in their cause and want to make a difference. But it can be very dangerous and scary for them.
Dissent, which means disagreeing with the government or the way things are, is also not always allowed in China. People who speak out against the government or say things that are critical of them can get in trouble and be punished.
So, protesting and dissent can be a way for people to speak out and try to make a change, but it can also be risky in China because of how the government reacts.