What is must do something about it?

"Must do something about it" is a phrase often used to express urgency or importance in taking action. It implies that there is an issue or problem that requires attention and action in order to resolve it. It is typically used in situations where delay or inaction may result in negative consequences or missed opportunities. In order to address the issue or problem, it is necessary to identify the cause and develop a plan of action to address it. Taking action can involve a variety of approaches, including seeking help from others, making changes to one's own behavior or circumstances, or advocating for systemic change. Whatever the approach, the key is to take action in a timely and effective manner to mitigate any negative consequences or missed opportunities.