Sixty-plus years later, we’re still staring at that grainy footage from Dealey Plaza. It’s haunting. People usually get bogged down in the "how"—the magic bullets, the grassy knoll, the umbrella man—but the "why" is actually where the real story lives. If you want to understand why did Lee Harvey Oswald assassinate JFK, you have to stop looking at him as a movie villain and start looking at him as a deeply frustrated, desperate man who wanted to be "somebody."
He wasn't a master assassin. He was a high school dropout. He was a Marine who got court-martialed twice. Honestly, he was a guy who failed at almost everything he touched, except for one thing: shooting a rifle.
A Lifetime of Being a Nobody
Oswald’s childhood was a wreck. His father died before he was born, and his mother, Marguerite, was... let's just say she was difficult. They moved around constantly—about 20 times before he was even an adult. When you move that much, you don't make friends. You become an outsider. By the time he was a teenager in New York, a psychiatrist labeled him as having a "schizoid personality pattern" with passive-aggressive tendencies. He was lonely.
He found an escape in Marxism. It gave him a sense of superiority. While other kids were playing sports or going to dances, Lee was reading Das Kapital. He thought he was smarter than everyone else. He joined the Marines at 17, not because he was a patriot, but because it was a way out. But even there, he didn't fit in. His nickname was "Oswaldskovich" because he kept talking about how great the Soviet Union was.
The Defection That Failed
In 1959, Oswald did something radical. He defected to the USSR. He literally showed up in Moscow and told them he wanted to give up his U.S. citizenship. He thought he’d be treated like a hero, a brilliant American intellectual coming to help the communist cause.
The Soviets weren't impressed.
They thought he was a nuisance, maybe even a spy. They sent him to Minsk to work in a radio factory. Boring stuff. He married a local girl, Marina Prusakova, but he quickly realized the Soviet "paradise" was just a gray, depressing grind. He wasn't special there, either. So, he crawled back to America in 1962.
This is the turning point. He came back to Texas, and he was still a nobody. He was working menial jobs. He was abusive to his wife. He was a failure in two different superpowers. That kind of ego bruising does something to a person.
The Walker Incident: A Practice Run
Most people forget that JFK wasn't Oswald’s first target. In April 1963, he tried to kill General Edwin Walker, a hardline anti-communist. Oswald took a shot at him through a window at his home. He missed because the bullet hit the window frame.
Why Walker? Because Oswald wanted to be a "historical' figure." He wanted to strike a blow for the political causes he claimed to care about—specifically, the protection of Fidel Castro’s Cuban revolution. He was obsessed with Cuba. He even started his own "Fair Play for Cuba" chapter in New Orleans, though he was basically the only member.
When you ask why did Lee Harvey Oswald assassinate JFK, you have to look at his failed attempt on Walker. It shows a pattern. He was looking for a target that would make the world notice him. Kennedy wasn't even his original enemy; Kennedy was just the biggest representative of the system Oswald hated.
The Motive of Political Delusion
Oswald believed he was a revolutionary. He genuinely thought that by killing Kennedy, he would somehow help the cause of the Cuban Revolution. He had spent months trying to get a visa to go to Cuba via Mexico City. He was rejected.
He was desperate. He was about to lose his job at the Texas School Book Depository. His wife was living apart from him and was talking about a permanent legal separation. His life was falling apart, again.
Then, he saw the newspaper. The President’s motorcade was going to drive right past his workplace.
It was a coincidence of history. If Oswald had worked at a dry cleaner three blocks over, Kennedy might have lived. But Oswald saw an opportunity to finally achieve the "greatness" he felt he deserved. He wasn't a puppet of the CIA or the Mafia in his own mind; he was a soldier for the Marxist cause, acting alone to change the course of history.
What Most People Get Wrong About the Evidence
There’s this idea that Oswald couldn't have done it because he wasn't a good shot. That’s just flat-out wrong. In the Marines, he qualified as a "sharpshooter." While he wasn't the best in the unit, he was better than average. The distance from the sixth-floor window to the motorcade wasn't an impossible shot for someone with his training.
Also, consider the rifle. It was a cheap, Italian-made Mannlicher-Carcano. It wasn't a high-end sniper tool. It was a budget weapon he bought through a mail-order catalog using the alias "A. Hidell." This speaks to his character—he was doing things on a shoestring budget, acting out a spy fantasy in his own head.
The Psychology of a Lone Wolf
Experts like Vincent Bugliosi, who wrote the massive Reclaiming History, and psychologists who have studied Oswald's life, point to a "protean" personality. He changed his identity to fit his needs. He was a Marine, then a Soviet, then a family man, then a street agitator.
None of it worked.
The assassination was his final attempt to fix his identity. By killing the most powerful man in the world, he ensured he would never be forgotten. He wouldn't be "Lee the dropout" anymore. He’d be "Oswald."
Comparing the Theories
While the Warren Commission concluded he acted alone, the House Select Committee on Assassinations (HSCA) in the late 70s suggested a "probability" of a conspiracy based on acoustic evidence that has since been largely discredited.
- The CIA Theory: People think the CIA used him because of his time in the USSR. But would the CIA really use a guy as unstable and loud-mouthed as Oswald for their most important hit? Probably not.
- The Mafia Theory: They hated JFK for the crackdown by Robert Kennedy. But again, Oswald was a Marxist. He wouldn't have been a natural ally for the mob.
- The Pro-Castro Theory: This is the one with the most "logical" weight, but even then, there's no evidence Castro ordered it. It's more likely Oswald did it for Castro, without Castro ever knowing who he was.
The Actionable Reality of the JFK Case
If you’re looking to get deeper into the facts rather than the rumors, there are specific things you can do to see the evidence for yourself. The National Archives has released the vast majority of the JFK records.
- Read the 26 volumes of the Warren Commission testimony. Don't just read the summary. Read the actual interviews with his coworkers and Marina Oswald.
- Visit the Sixth Floor Museum in Dallas. Seeing the actual distance and the layout of Dealey Plaza changes your perspective on the physical possibility of the shots.
- Examine the forensic ballistics reports. Modern computer modeling, like the work done by Dale Myers, has mapped out the "Single Bullet Theory" with incredible precision, showing that the wounds of Kennedy and Governor Connally actually do align with a single shot from that window.
Ultimately, the reason why did Lee Harvey Oswald assassinate JFK is found in the intersection of a broken mind and a political obsession. He was a man who felt the world owed him a seat at the table of history, and he decided to take it by force.
To understand the assassination, stop looking for a grand, complex plan. Look for the small, angry man who felt he had nothing left to lose.
Recommended Next Steps for Research
- Study the "Alek Hidell" alias: Trace how Oswald used this fake identity to purchase the weapons, which links him directly to the rifle found at the scene.
- Review the Mexico City Trip: Look into the CIA surveillance of the Soviet and Cuban embassies in September 1963. It shows Oswald’s state of mind just weeks before the shooting.
- Analyze the Ruth Paine Correspondence: Ruth Paine was the woman Oswald's wife was staying with. Her letters and testimony provide the most intimate look at Oswald's crumbling personal life in the fall of 1963.
The history isn't in the shadows; it's in the paper trail Oswald left behind.