Columbine massacre 'inspired' gunman who killed a tourist and wounded 13 others at Mexican pyramid: Murderer carried out attack on 27th anniversary of school shooting

A gunman inspired by the Columbine massacre killed a tourist and wounded 13 others at a Mexican pyramid on the 27th anniversary of the 1999 school shooting. The attack occurred at a historic site, with the perpetrator's actions linked to the Colorado tragedy.