
A school shooting and attempted bombing occurred on April 20, 1999, at Columbine High School in Columbine, Colorado, United States. The perpetrators, twelfth grade (senior) students Eric Harris and Dylan Klebold, murdered 12 students and one teacher. Ten students were killed in the school library, where the pair subsequently died by suicide. Twenty-one additional people were injured by gunshots, and gunfire was also exchanged with the police. Another three people were injured trying to escape the school. At the time, it was the deadliest school shooting in U.S. history. The crime has inspired several copycats and "Columbine" has become a byword for school shootings.

Adios is the eleventh studio album released by German industrial band KMFDM. The album was originally conceived as the group's parting shot to its longtime record label, Wax Trax! Records, but it ended up also signaling the break-up of KMFDM itself until the band reformed in 2002. Recorded in Seattle, Washington, this was the last album to feature En Esch and Günter Schulz, who both went on to form Slick Idiot. Following the break-up, founding member Sascha Konietzko created the band MDFMK, before reforming KMFDM in 2002 without Esch or Schulz.
The Columbine effect is the legacy and impact of the 1999 Columbine High School massacre. The shooting has inspired numerous copycat crimes, with many killers taking their inspiration from Eric Harris and Dylan Klebold, describing the two perpetrators as being martyrs. The shooting has also had a significant impact on popular culture.
The Columbine Memorial is a memorial in Columbine, Colorado, that honors the deceased and injured victims, survivors, rescuers, and all who were affected by the Columbine High School massacre on April 20, 1999. The memorial is located in Clement Park, which is behind Columbine High School, the site of the massacre. It is operated by a non-profit institution whose mission is to operate the memorial and its upkeeping.

Stephen Austin Eubanks was an American motivational speaker on addiction and recovery. He was a survivor of the Columbine High School massacre, in which his best friend, 17-year-old Corey DePooter, was killed and Eubanks was shot in his hand and knee. Eubanks struggled with opioid addiction after the shooting. Eubanks was the chief operations officer for the Foundry Treatment Center.
Eric David Harris and Dylan Bennet Klebold were an American mass murder duo who killed 13 people and wounded 24 others on April 20, 1999, at Columbine High School in Columbine, Colorado, United States. Harris and Klebold, who were seniors at the school, simultaneously committed suicide in the library, where they had killed ten of their victims. This became known as the Columbine High School massacre. At the time, it was the deadliest school shooting in history, leading it to be one of the most infamous shootings ever perpetrated.
