Editing Eric Harris and Dylan Klebold (section)

===Columbine High School===
At Columbine High School, Harris and Klebold were active in school play productions, operated video productions and became computer assistants, maintaining the school's computer server.<ref name="Suspects"/> According to early accounts of the shooting, they were very unpopular students and targets of [[School bullying|bullying]]. While sources do support accounts of bullying specifically directed toward Harris and Klebold,<ref name=DenverWestword1>{{cite news |author=Prendergast, Alan |date=July 13, 2000 |url=http://www.westword.com/2000-07-13/news/the-missing-motive/ |title=The Missing Motive |newspaper=[[Denver Westword News]]|access-date=May 26, 2012|archive-url=https://web.archive.org/web/20120728033506/http://www.westword.com/2000-07-13/news/the-missing-motive/|archive-date=July 28, 2012|url-status=live }}</ref><ref name=brooksbrown>{{cite book |first1=Brooks|last1=Brown |first2=Rob|last2=Merritt |title=No Easy Answers: The Truth Behind Death at Columbine |url=https://archive.org/details/pdfy-pC_WzWbOzxls5ms1 |year=2002 |publisher=[[Lantern Books]] |location=New York City |isbn=978-1-59056-031-0 |access-date=November 13, 2019 |archive-url=https://web.archive.org/web/20170531090118/https://archive.org/details/pdfy-pC_WzWbOzxls5ms1 |archive-date=May 31, 2017 |url-status=live}}</ref><ref name=DenverWestword2>{{cite web |url=http://blogs.westword.com/latestword/2009/04/forgiving_my_friend_dylan_kleb.php |title=Forgiving my Columbine High School friend, Dylan Klebold |newspaper=Denver Westword Post |first=Alan|last=Prendergast|date=April 17, 2009|access-date=May 26, 2012|archive-url=https://web.archive.org/web/20090420030056/http://blogs.westword.com/latestword/2009/04/forgiving_my_friend_dylan_kleb.php|archive-date=April 20, 2009|url-status=live }}</ref> accounts of them being outcasts have been reported to be false, since both of them had a close knit group of friends.<ref>{{cite news|first=David|last=Brooks|author-link=David Brooks (journalist)|date=April 24, 2004|url=https://www.nytimes.com/2004/04/24/opinion/the-columbine-killers.html|title=The Columbine Killers|newspaper=[[The New York Times]]|archive-url=https://web.archive.org/web/20170204104540/http://www.nytimes.com/2004/04/24/opinion/the-columbine-killers.html |archive-date=February 4, 2017 }}</ref><ref name=USAToday>{{cite news |last=Toppo |first=Greg |url=https://www.usatoday.com/news/nation/2009-04-13-columbine-myths_N.htm |title=10 years later, the real story behind Columbine |newspaper=[[USA Today]] |date=April 14, 2009 |access-date=April 14, 2009 |archive-url=https://web.archive.org/web/20090415152154/http://www.usatoday.com/news/nation/2009-04-13-columbine-myths_N.htm |archive-date=April 15, 2009 |url-status=live }}</ref>

Harris and Klebold were initially reported to be members of a [[clique]] that was called the "Trenchcoat Mafia", despite later confirmation that the pair had no connection to the group and furthermore did not appear in the group's photo in Columbine High's 1998 [[yearbook]].<ref name="nytimes">{{cite news|first=Jodi|last=Wilgoren|date=April 25, 1999|url=https://www.nytimes.com/1999/04/25/us/terror-in-littleton-the-group-society-of-outcasts-began-with-a-99-black-coat.html|title=Terror in Littleton: the Group; Society of Outcasts Began With a $99 Black Coat|newspaper=[[The New York Times]]|archive-url=https://web.archive.org/web/20170626024728/http://www.nytimes.com/1999/04/25/us/terror-in-littleton-the-group-society-of-outcasts-began-with-a-99-black-coat.html?pagewanted=all&src=pm |archive-date=June 26, 2017 }}</ref><ref>{{cite news|url=http://news.bbc.co.uk/2/hi/americas/325054.stm|title=Who are the Trenchcoat Mafia?|website=[[BBC News]]|date=April 21, 1999|archive-url=https://web.archive.org/web/20130902001210/http://news.bbc.co.uk/2/hi/americas/325054.stm |archive-date=September 2, 2013 }}</ref> Harris's father erroneously stated that his son was "a member of what they call the Trenchcoat Mafia" in a {{nowrap|[[9-1-1]]}} call he made on the day of the shooting.<ref>{{cite book |first=Jeff |last=Kass |title=Columbine: A True Crime Story |url=https://books.google.com/books?id=eHQ7OgAACAAJ |publisher=Ghost Road Publishing Group |location=Denver, Colorado|date=2009 |isbn=978-0-9816525-6-6 |access-date=September 23, 2016 |archive-url=https://web.archive.org/web/20140105034627/http://books.google.com/books?id=eHQ7OgAACAAJ |archive-date=January 5, 2014 |url-status=live}}</ref> Klebold attended the high school [[prom]] three days before the shootings with a classmate named Robyn Anderson.<ref name="FatalFriendship">{{cite news |first1=Linda |last1=Bartels |first2=Carla|last2=Crowder |url=http://denver.rockymountainnews.com/shooting/0822fata1.shtml |title=Fatal Friendship |work=[[Denver Rocky Mountain News]] |date=August 22, 1999 |access-date=June 1, 2008 |url-status=dead |archive-url=https://web.archive.org/web/20081205024601/http://denver.rockymountainnews.com/shooting/0822fata1.shtml |archive-date=December 5, 2008 }}</ref>

Harris and Klebold linked their personal computers on a network and played video games over the Internet. Harris created a set of levels for the game ''Doom'', which later became known as the "Harris levels". The levels are downloadable over the internet through [[Doom WAD|''Doom'' WADs]]. Harris had a web presence under the [[User (computing)|handle]] "REB" (short for Rebel, a nod to the nickname of Columbine High's sports teams) and other online aliases, including "Rebldomakr", "Rebdoomer", and "Rebdomine". Klebold went by the names "VoDKa" and "VoDkA", after the [[Vodka|alcoholic beverage]]. Harris had various websites that hosted ''Doom'' and ''[[Quake (video game)|Quake]]'' files, as well as team information for those with whom he gamed online. The sites openly espoused hatred for people in their neighborhood and the world in general. When the pair began experimenting with [[pipe bomb]]s, they posted results of the explosions on the websites. The website was shut down by [[America Online]] after the shootings and was preserved for the FBI.<ref>{{cite web |title=Harris hinted at violence to come |url=http://edition.cnn.com/US/9904/21/harris.profile.02/index.html |website=[[CNN]] |date=April 22, 1999|access-date=August 15, 2012|archive-url=https://web.archive.org/web/20120826205519/http://edition.cnn.com/US/9904/21/harris.profile.02/index.html|archive-date=August 26, 2012|url-status=dead}}</ref>