Mass murder refers to the intentional killing of multiple people, typically in a single event or closely related series of events. This act is often characterized by the perpetrator's desire to inflict harm on a large number of individuals, often driven by motives such as revenge, ideology, or mental illness. The term is distinct from other forms of homicide, such as serial killing or spree killing, as it involves the simultaneous or near-simultaneous killing of several victims. Mass murder can occur in various settings, including public places, schools, and workplaces, and often leads to significant societal and psychological impacts.