On November 1, 1950, two Puerto Rican nationalists launched a brazen armed assault on Blair House in Washington, D.C., attempting to assassinate President Harry S. Truman. The historic residence served as the president's temporary home while the White House underwent extensive structural renovations. The daylight gunfight lasted less than forty seconds, leaving one attacker and a brave White House police officer dead, while the president remained unharmed.
The attack was orchestrated by Oscar Collazo and Griselio Torresola, members of the Puerto Rican Nationalist Party who sought to draw international attention to their cause for independence. While the conspiracy failed completely, it stands as one of the most violent breaches of presidential security in American history.
The Political and Historical Context of 1950
To understand the attack on Blair House, you have to look at the tense geopolitical and domestic climate of late 1940s and early 1950s Puerto Rico. The island was a United States territory experiencing rapid political shifts, industrialization under Operation Bootstrap, and fierce debates over its future political status.
The Puerto Rican Nationalist Party, led by Pedro Albizu Campos, rejected commonwealth proposals and US administration entirely. They advocated for immediate, absolute independence, using protests and sporadic uprisings to make their voices heard. Just days before the Washington attack, a series of coordinated nationalist revolts broke out across several towns in Puerto Rico itself.
Collazo and Torresola believed that assassinating the American president would force global headlines to focus on colonial rule in Puerto Rico. They hoped a dramatic, high-stakes sacrifice would spark a broader revolution back home.
The Conspirators: Oscar Collazo and Griselio Torresola
The plot relied on two dedicated nationalists living on the mainland United States. Oscar Collazo worked in a metal-polishing factory in New York City, where he had become deeply involved with local party chapters. Griselio Torresola was an experienced gunman who possessed exceptional pistol-handling skills and served as a crucial tactician for the operation.
The pair spent weeks planning the logistics, purchasing weapons, and traveling by train from New York to Washington, D.C., to scout Blair House. They mapped out the approaches on Pennsylvania Avenue, noting the positions of the guard booths and the typical patrol routes of the security details.
Despite their meticulous planning, the operational execution was plagued by basic mechanical oversights and a severe underestimation of the Secret Service and White House Police Force.
November 1, 1950: The Attack on Blair House
At roughly 2:00 PM on November 1, Collazo and Torresola approached Blair House from opposite directions. President Truman was resting upstairs on the second floor following lunch, while staff members and guards managed the security perimeter.
Torresola advanced from the west side toward the corner guard booth, while Collazo moved up behind White House Police Officer Donald Birdzell, who stood on the stone steps of the residence.
Collazo drew his German Walther P38 pistol and aimed at Birdzell's back. However, in the heat of the moment, he failed to chamber a round. The gun didn't fire when he pulled the trigger. The metallic click alerted Birdzell, who began to turn around. Collazo quickly racked the slide to chamber a live cartridge and fired, striking Birdzell in the right knee and incapacitating him.
Hearing the commotion, Torresola rushed the front entrance from the west. He targeted Private Leslie Coffelt, who was stationed nearby. Coffelt took the brunt of the initial gunfire but managed to return effective fire with his .38-caliber service revolver.
Torresola fired several shots that wounded other responding officers, but as he paused near the steps to reload his weapon, Private Coffelt stepped out of the guard booth. Mortally wounded, Coffelt fired a precise shot from thirty feet away, hitting Torresola two inches above the ear and killing him instantly.
Other Secret Service agents and police officers converged on the scene, shooting and wounding Collazo before he could breach the front doors. The entire gunfight lasted barely thirty-eight seconds.
President Truman's Reaction and the Aftermath
Upstairs, President Truman heard the heavy gunfire echoing through the street. He walked to a second-floor window just thirty feet from the front steps to see what was happening. Secret Service agents spotted him and shouted for him to duck away from the glass immediately. Truman complied, later noting that he felt no panic because his service in World War I had accustomed him to being shot at. You can read more about his perspective via the Harry S. Truman Library & Museum.
The human cost of the defense was severe. Private Leslie Coffelt died from his wounds four hours later at the hospital. Several other officers suffered serious injuries but eventually recovered.
Following the shootout, federal authorities arrested Oscar Collazo and charged him with murder and attempted assassination. He was convicted in federal court and sentenced to death. However, President Truman commuted Collazo's sentence to life imprisonment, believing that executing him would only create a martyr for the nationalist movement. Decades later, in 1979, President Jimmy Carter commuted Collazo's sentence to time served, allowing him to return to Puerto Rico where he lived out his final years.
The attack prompted a complete overhaul of presidential protection protocols. It highlighted the glaring vulnerabilities of open residences like Blair House and accelerated the permanent implementation of the modern, highly secure Secret Service protective detail we recognize today. For official context on executive branch protection history, check out the U.S. Secret Service History.
Frequently Asked Questions
Why did Oscar Collazo and Griselio Torresola target Blair House instead of the White House?
The White House was undergoing massive interior reconstruction and structural reinforcement between 1948 and 1952. President Truman lived across the street at Blair House during this period, making it the primary executive residence and the target for the assault.
What happened to Oscar Collazo after his release from prison?
After serving nearly 29 years in federal prison, Collazo was released in 1979 when President Jimmy Carter commuted his sentence. He returned to Puerto Rico, where he continued to advocate for island independence until his death in 1994.
Did the assassination attempt change US policy toward Puerto Rico?
While the attack did not achieve the nationalists' goal of immediate independence, it focused national and international attention on Puerto Rico's political status. President Truman subsequently supported the drafting of a new local constitution and a 1952 plebiscite, where voters chose to establish Puerto Rico as a self-governing commonwealth in association with the United States.
How did the attack impact presidential security procedures?
The incident exposed critical flaws in exterior protection methods. Afterward, security at temporary and permanent presidential residences was drastically tightened, leading to permanent guard checkpoints, restricted street access, and enhanced coordination between the White House Police Force and the Secret Service.
