victims in
Huittinen, Finland in 1943, committed by
Toivo Koljonen , registration D-AIPX, was destroyed while operating
Germanwings Flight 9525, having been
intentionally crashed into the
Alps by its co-pilot, killing all 150 people on board. Mass murderers may be categorized into killers of family, of coworkers, of students, and of random strangers. Their motives vary. One motivation for mass murder is
revenge, but other motivations are possible, including the need for attention or fame. Several
autocratic regimes have been known to have ordered mass murders including
genocide and
politicide. Acting on the orders of Soviet leader
Joseph Stalin,
Vasili Blokhin's
war crime of
killing of 7,000 Polish prisoners of war, shot over 28 days, was one of the most organized and protracted mass murders by a single individual on record.
Law enforcement response and countermeasures (United States) Analysis of the
Columbine High School massacre and other incidents where
law enforcement officers waited for backup has resulted in changed recommendations regarding what victims, bystanders, and law enforcement officers should do. In the Columbine shooting, the perpetrators,
Eric Harris and Dylan Klebold, were able to murder 14 people, then commit suicide before the first SWAT team even entered the school. Average response time by law enforcement to a mass shooting is typically much longer than the time the shooter is engaged in killing. While immediate action may be extremely dangerous, it could save lives which would be lost if victims and bystanders involved in the situation remain passive, or law enforcement response is delayed until overwhelming force can be deployed. It is recommended that victims and bystanders involved in the incident take active steps to flee, hide, or fight the shooter and that law enforcement officers present or first arriving at the scene attempt immediately to engage the shooter. In many instances, immediate action by victims, bystanders, or law enforcement officers has saved lives. However, law enforcement programs and actions have so far been unable to reduce the total number of incidents. In 2020, a record number of 600 mass shootings occurred. ==Criticism as an analytical category==