When it comes to protesting, there is no one answer as to whether it is effective or not. It depends on the situation, the goals of the protesters, and a variety of other factors.
However, protests have been known to lead to positive change in a variety of ways, both big and small. For example, protests can help raise awareness about an issue, bring people together to support a cause, and pressure those in power to make changes. They can also be a way to show solidarity and offer support to those who are directly affected by an issue.
Of course, not all protests are successful, and some can even turn violent. But even in these cases, protesting can be a way to bring attention to an important issue and give a voice to those who might not otherwise be heard.