September 11, 1981 - Dylan Klebold

Eric David Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold ( KLEE-bohld; September 11, 1981 – April 20, 1999) were American high school seniors and a mass murderer duo who perpetrated the massacre at Columbine High School on April 20, 1999, in Columbine, Colorado. Harris and Klebold killed 13 students and one teacher and wounded 23 others.

Harris and Klebold met while attending middle school and gradually became close. By their junior year of high school, they were described as best friends who were dependent on one another. Early reports characterized them as unpopular and frequent targets of bullying; however, many peers later stated that the two were not near the bottom of the school's social hierarchy, as both had numerous friends and active social lives.

Content sourced from en.wikipedia.org/wiki/Eric Harris and Dylan Klebold under CC BY-SA 4.0.