Learn the difference between serial killer and mass murderer.weird how jack the reaper lived there isn't it?
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"A serial killer is conventionally defined as a person who murders three or more people in a period of over a month, with “cooling down” time between murders. For a serial killer, the murders must be separate events, which are most often driven by a psychological thrill or pleasure.
Mass murderers, unlike serial killers, kill a large number of people, typically at the same time in a single location. With some exceptions, many mass murders end with the death of the perpetrators, either by self-infliction or by law enforcement. According to Dr. Michael Stone, professor of psychiatry at Columbia, mass murderers are generally dissatisfied people, and have poor social skills and few friends. Generally the motives of mass murderers are less obvious than those of serial killers. According to Stone, 96.5% of mass murderers are male, and a majority of them are not clinically psychotic. "