Public Upheaval is a term used to describe a situation in which a large group of people are protesting or demonstrating against a certain issue. It is often characterized by civil unrest, such as riots, and can be caused by a variety of factors, including political, economic, and social issues. The term 'RIOT' is often used to describe a public upheaval, as it is a form of civil disobedience that involves a large group of people engaging in disruptive behavior.