Eric Harris was one of the two perpetrators responsible for the Columbine High School massacre on April 20, 1999, in Littleton, Colorado. Along with Dylan Klebold, Harris murdered twelve students and one teacher before committing suicide. His actions fundamentally altered American school security, law enforcement response protocols, and the psychological study of mass shooters.
Early Life and Family Background
Born on April 9, 1981, in Wichita, Kansas, Eric David Harris was the younger of two sons born to Wayne and Katherine Harris. Wayne Harris was a transport pilot in the United States Air Force, which necessitated frequent moves for the family during Eric's childhood. The family lived in Ohio, Michigan, and New York before finally settling in Littleton, Colorado, in 1993, following Wayne’s retirement from the military.
Biographers and forensic psychologists often examine this period to determine if the frequent relocations contributed to Eric’s later social alienation. While he was often described as the "new kid," childhood acquaintances initially remembered him as a relatively normal child who played Little League baseball and enjoyed video games. However, as the family settled in Colorado, Eric began to exhibit signs of social friction. He attended Deer Creek Middle School and later Columbine High School, where he met Dylan Klebold in the seventh or eighth grade. Their friendship became the central axis around which the events of 1999 would eventually revolve.
In his early teens, Harris was described as intelligent but increasingly volatile. He had a passion for computers and the game Doom, and he eventually began creating his own levels, which he hosted on a personal website. This website would later become a critical piece of evidence, as it evolved from hosting gaming content to featuring violent rants, death threats, and instructions for building pipe bombs.
The Path to Radicalization and Legal Troubles
The transition from a frustrated teenager to a mass murderer was not instantaneous. A significant turning point occurred in January 1998, when Harris and Klebold were arrested for breaking into a locked van and stealing electronic equipment. Both were charged with mischief, felony theft, and third-degree burglary. Because it was their first offense, they were placed in a juvenile diversion program.
Harris was remarkably successful in the diversion program, convincing counselors that he was repentant and highly motivated to change. His journals, however, told a different story. While he was writing polite letters of apology to the van owner, he was simultaneously recording his hatred for society and his plans for "NBK" (an acronym for the movie Natural Born Killers, which the pair used as a code for their planned attack).
During this period, Harris’s behavioral issues became more apparent to those outside his immediate family. He had a public falling out with a former friend, Brooks Brown, after throwing a piece of ice at Brown’s car. Harris subsequently posted death threats against Brown on his website. When the Brown family reported these threats to the Jefferson County Sheriff's Office, an investigator drafted an affidavit for a search warrant for Harris’s home. For reasons that remain a subject of intense scrutiny, the warrant was never filed, and the opportunity to discover Harris’s cache of weapons and explosives was lost.
Psychological Profile: Psychopathy and Grandiosity
In the decades following the shooting, forensic psychologists—most notably Dr. Dwayne Fuselier, the FBI’s lead investigator on the case—have categorized Eric Harris as a clinical psychopath. Unlike Klebold, who is often characterized as suicidal and deeply depressed, Harris is viewed as the predatory leader of the duo.
Key Traits of Harris’s Psychology
- Lack of Empathy: Harris’s journals are devoid of concern for his victims. He viewed the majority of humanity as "stupid" and "unworthy," often comparing himself to a god or a higher being.
- Deceptiveness: His ability to manipulate his diversion officers and his parents is a hallmark of psychopathic behavior. He maintained a facade of normalcy while building an arsenal in his garage.
- Messianic Complex: Harris believed he was superior to the "common" person. He frequently wrote about "natural selection" and his desire to "kick-start" a revolution of the elite against the "weak."
- Grandiosity: His plans were not limited to a school shooting; he initially intended to bomb the school cafeteria, hoping to kill hundreds, and then hijack a plane to crash it into a major city.
It is important to note that Harris was prescribed the antidepressant Luvox shortly before the attack. While some critics have questioned the role of the medication in his behavior, most psychological experts argue that his underlying personality disorder was the primary driver of his actions. The medication was intended to treat obsessive-compulsive traits and anger, but Harris’s commitment to his "mission" remained unshaken.
Planning and the "Basement Tapes"
Throughout 1998 and early 1999, Harris and Klebold engaged in extensive tactical planning. They acquired four firearms through various means: a Hi-Point 995 carbine, a TEC-9 handgun, and two shotguns. Many of these weapons were obtained via "straw purchases" made by an older friend, Robyn Anderson, at a local gun show.
The pair also filmed a series of home movies known as the "Basement Tapes." In these videos, they displayed their weapons, practiced their movements, and explained their motivations. The tapes are chilling for their lack of remorse; in one segment, Harris apologizes to his parents for the "shrapnel" his actions would cause their lives, but he concludes that the "judgment" he is about to deliver is more important.
Harris’s journals from this time reflect a meticulous attention to detail. He created schedules, maps of the school, and inventories of their explosive devices. He was the primary architect of the bombing plan, which relied on two 20-pound propane bombs placed in the school cafeteria. Had these bombs detonated as intended during the "A" lunch shift, the death toll likely would have reached into the hundreds.
The Execution of the April 20 Attack
On the morning of April 20, 1999—a date chosen perhaps for its proximity to the anniversary of the Oklahoma City bombing or other historical events—Harris and Klebold arrived at Columbine High School in separate vehicles. They were dressed in black trench coats to conceal their weapons.
The attack was designed to be a bombing first and a shooting second. When the cafeteria bombs failed to detonate due to faulty timers, the pair moved to the "Plan B" phase: a direct armed assault. At approximately 11:19 AM, they began shooting students outside the school before moving toward the library.
The library became the site of the greatest carnage. Over a period of roughly 20 minutes, Harris and Klebold killed ten people and injured many others in that room alone. Witnesses recalled Harris’s behavior as almost jubilant; he laughed and shouted as he fired. However, as the realization set in that their grand plan for a "national event" via bombing had failed, the pair’s energy appeared to wane. They wandered the halls of the school, firing aimlessly and looking into classrooms but not attempting to enter them. By approximately 12:08 PM, both Harris and Klebold returned to the library and committed suicide.
Comparative Analysis: Harris vs. Klebold
Understanding the partnership is essential to understanding the event. While the media initially portrayed them as equal "outcasts," forensic evidence suggests a distinct hierarchy.
| Feature | Eric Harris | Dylan Klebold |
|---|---|---|
| Primary Diagnosis | Psychopathy / Malignant Narcissism | Clinical Depression / Suicidality |
| Primary Emotion | Anger and Contempt | Sadness and Self-Loathing |
| Role in Planning | Architect and Tactician | Participant and "Follower" |
| Journal Focus | Hatred of others, technical planning | Loneliness, desire for love, death |
| Post-Massacre View | Predatory Lead | Vulnerable/Depressed Accomplice |
| Weaponry | Hi-Point Carbine / Savage Shotgun | TEC-9 / Stevens Shotgun |
The Aftermath and the "Columbine Effect"
The impact of Eric Harris’s actions cannot be overstated. In the years following 1999, the "Columbine Effect" became a recognized phenomenon in sociology and criminology. This refers to the way Harris and Klebold became "cultural icons" for subsequent mass shooters. Their attire, their language, and their "rebel" personas have been emulated by numerous attackers over the last 27 years.
Changes in Law Enforcement and Security
The failure of the Jefferson County Sheriff's Office to enter the building while the shooting was active led to a total overhaul of tactical responses. The Active Shooter Protocol was born, requiring the first officers on the scene to immediately enter and neutralize the threat rather than waiting for SWAT teams.
Additionally, schools across the United States implemented "Zero Tolerance" policies. While intended to prevent violence by punishing even minor threats or displays of weapons, these policies have faced criticism for their rigidity and impact on student mental health.
Threat Assessment Development
In 2026, the legacy of Eric Harris is primarily found in the field of threat assessment. Rather than looking for "profiles" of shooters (which has proven largely ineffective), experts now look for "pathways to violence." Harris’s "leakage"—his website rants, his school essays about violence, and his fascination with explosives—are now recognized as clear red flags that require intervention.
Frequently Asked Questions
What was Eric Harris's main motivation?
Harris’s primary motivation was a profound sense of superiority and a desire for infamy. His journals indicate he wanted to be remembered as a "god-like" figure who punished humanity for its perceived mediocrity. Unlike many other shooters who act out of a specific grievance (such as bullying), Harris's hatred was generalized against the entire human race.
Were the Harris parents ever held legally responsible?
The families of the victims filed multiple lawsuits against Wayne and Kathy Harris. Most of these were settled out of court. While the public often blamed the parents for failing to notice the bombs being built in the garage, no criminal charges were ever filed against them. They have largely remained out of the public eye since 1999.
Did bullying cause Eric Harris to commit the shooting?
While Harris and Klebold were indeed targets of bullying by some of the school’s athletes, most forensic psychologists believe this was a secondary factor. Many students are bullied without resorting to mass murder. For Harris, the bullying likely served as a justification for his pre-existing psychopathic tendencies rather than being the root cause of them.
What happened to the "Basement Tapes"?
The Jefferson County Sheriff's Office eventually decided to destroy the "Basement Tapes" to prevent them from serving as a "how-to" guide for future shooters. While transcripts and short clips have leaked or were released to the press, the full videos are no longer accessible to the general public.
How did Harris obtain his guns?
Harris and Klebold used a friend, Robyn Anderson, to purchase three of the guns at the Tanner Gun Show in December 1998. Because she was 18 and the sales were through private dealers, no background checks were required at the time. The fourth gun, the TEC-9, was purchased from a pizza shop coworker, Mark Manes, who was later sentenced to prison for selling a firearm to a minor.
Final Perspective on Threat Prevention
The case of Eric Harris serves as a somber reminder of the importance of early intervention and the serious treatment of "leakage" in digital and social spaces. For educators, parents, and law enforcement, the primary lesson is that the transition from ideation to action is often accompanied by observable behaviors. Recognizing the difference between a student in crisis and a predatory personality is essential for modern school safety. If you or someone you know is exhibiting signs of extreme withdrawal, fascination with mass violence, or making threats, contact local mental health professionals or school resource officers immediately.
