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Columbine effect

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TheColumbine effect is the legacy and impact of the Columbine High School massacre ("Columbine"), which occurred on April 20, 1999, at Columbine High School in Columbine, Colorado. The shooting has had an effect on school safety, policing tactics, prevention methods (including gun control and metal detectors), and inspired numerous copycat crimes, with many killers taking their inspiration from Eric Harris and Dylan Klebold by describing the two perpetrators as being martyrs or heroes and imitating their methods or outward styles. By the 20th anniversary of the massacre, more than 100 known mass shooting attacks and plots across over 30 states had been influenced by the 1999 shooting. Dozens more never made the news. As of 2024, the Columbine massacre has been directly linked to at least 50 other mass shootings that have left over 300 people dead and over 500 wounded.