![Gun dealer Mel Bernstein holds an M-60 machine gun in his gun shop outside Colorado Springs April 27. Bernstein alerted federal authorities that school shooting suspects Dylan Klebold and Eric Harris, along Gun dealer Mel Bernstein holds an M-60 machine gun in his gun shop outside Colorado Springs April 27. Bernstein alerted federal authorities that school shooting suspects Dylan Klebold and Eric Harris, along](https://c8.alamy.com/comp/2D5C6NT/gun-dealer-mel-bernstein-holds-an-m-60-machine-gun-in-his-gun-shop-outside-colorado-springs-april-27-bernstein-alerted-federal-authorities-that-school-shooting-suspects-dylan-klebold-and-eric-harris-along-with-two-other-people-dressed-in-black-trench-coats-attempted-to-purchase-a-machine-gun-several-weeks-before-the-april-20-shooting-rampage-at-columbine-high-school-jmjp-2D5C6NT.jpg)
Gun dealer Mel Bernstein holds an M-60 machine gun in his gun shop outside Colorado Springs April 27. Bernstein alerted federal authorities that school shooting suspects Dylan Klebold and Eric Harris, along
![Revealed, British boy accused of plotting new Columbine massacre: Teenager 'compiled hit list of pupils and teachers he wanted to eliminate' | Daily Mail Online Revealed, British boy accused of plotting new Columbine massacre: Teenager 'compiled hit list of pupils and teachers he wanted to eliminate' | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2014/03/04/article-2573356-1C085F4600000578-677_634x445.jpg)
Revealed, British boy accused of plotting new Columbine massacre: Teenager 'compiled hit list of pupils and teachers he wanted to eliminate' | Daily Mail Online
![Teens allegedly dressed like Columbine killers and threatened high school | Connecticut | The Guardian Teens allegedly dressed like Columbine killers and threatened high school | Connecticut | The Guardian](https://i.guim.co.uk/img/media/b4b993c7e179ca19928a33911250f5a9d6a7ddf2/0_409_2342_1410/master/2342.jpg?width=1200&quality=85&auto=format&fit=max&s=e98ca6be82de0af771dd7b0054127c05)