Collective behavior refers to the actions and reactions of a group of individuals in response to a shared situation or event. This phenomenon often occurs in crowds, social movements, or during emergencies, where people may act in ways that differ from their usual behavior. Factors such as social norms, emotions, and group dynamics can influence how individuals behave collectively. Examples of collective behavior include riots, protests, and mass gatherings. In these situations, individuals may feel a sense of anonymity and shared purpose, leading to behaviors that can be both positive, like community support, or negative, like vandalism. Understanding collective behavior helps in managing social interactions and responses during critical events.