Fire from Above: The Bombing of Puerto Rico

John F. McKeon 

The Puerto Rican independence movement is one of the longest standing anti-colonial struggles in the Western Hemisphere, spanning over 150 years across two different imperial powers.  

From the 19th-century revolts against Spain to modern-day political alliances, the movement has consistently sought  full sovereignty for the island. Isolated historical events are rare, as history functions  more like a cascading chain reaction. One development inevitably informs the next,  filling gaps much like nature fills a vacuum.  

On October 30, 1950, the Puerto Rican Nationalist Party, led by Pedro Albizu Campos,  launched a coordinated armed uprising fueled by intelligence they had accquired  regarding a planned government crackdown under the guise of ‘anti-communism’.  Leaders like Blanca Canales initiated this preemptive strike to challenge American  authority during a wave of global anti-colonial movements. During the tumultuous  Nationalist uprisings of October 1950, the US backed Puerto Rican National Guard took  the unprecedented step of bombing their own territory to quell rebellions against  American colonial rule, marking a dark and largely obscured chapter in American  history. 

As Puerto Rican Nationalists seized control of the town of Jayuya, declaring a ‘Free  Republic’, the government responded with overwhelming military force, using P-47  Thunderbolt fighter planes to drop 500-pound bombs on the town, followed by artillery,  mortars, and machine-gun fire. This merciless action—coupled with the brutal  suppression of the Utuado Uprising, where captured nationalists were executed by  guardsmen—was defended by the US backed administration as an "incident between  Puerto Ricans" and represented the only other time in American history that the US  bombed its own citizens …on its own soil, (the 1921 Tulsa Race Massacre, involved  aerial attacks on US citizens, indicating this may not be the exclusive instance). 

History does not happen in a vacuum; rather, it is a complex, interwoven tapestry  where every action is shaped by surrounding circumstances that produce far-reaching  consequences. What led up to the tragic day the US bombed its own citizens? As  always, we need to look to what came before. Understanding this interconnectedness  goes beyond merely judging the past, allowing for a deeper appreciation of the complex  motives and constraints that shaped the actions that followed. What came before? 

The Ponce Massacre 

In 1937 a peaceful nationalist march in Ponce ended in tragedy when police opened  fire, killing 21 people and wounding over 100. The Ponce massacre occurred on Palm  Sunday, March 21, when a peaceful march in Ponce, Puerto Rico, turned into a deadly  shooting by the Insular Police. Organized by the Puerto Rican Nationalist Party, the  march intended to commemorate the 1873 abolition of slavery and protest the  imprisonment of party leader Pedro Albizu Campos. 

Although a permit had been granted by the mayor, the US-appointed governor, Blanton  Winship, ordered it revoked at the last minute. As the marchers began to walk, police  surrounded them and opened fire with machine guns and rifles for roughly 13 minutes,  killing 19 civilians and two police officers (the latter from friendly fire), and wounding  over 200 others. An independent investigation by the American Civil Liberties Union  (ACLU) later characterized the event as a "police massacre," noting that the victims  were unarmed and many had been shot in the back while trying to flee. The tragedy  remains a defining moment in Puerto Rican history and led to Governor Winship's  eventual removal from office in 1939. 

The "Gag Law" Era (1948–1957) 

The Gag Law was passed in 1948, this law criminalized the display of the Puerto Rican  flag or any speech in favor of independence, drastically suppressing the movement for  nearly a decade. One of the most surreal periods in the island's history began on June  10, 1948, when Law 53, known as La Ley de la Mordaza (The Gag Law), was signed.  For nearly a decade, Puerto Ricans could face up to 10 years in prison just for owning  their own flag, a level of suppression rarely seen in other US territories. Law 53 is a  stark example of legislative suppression used to protect a specific political agenda  during a time of intense civil unrest. 

The law was enacted by the Puerto Rican legislature, which was then overwhelmingly  controlled by the Popular Democratic Party (PPD), led by Luis Muñoz Marín. The PPD  was actively developing the "Commonwealth" status for the island and viewed the  growing Nationalist Party, led by Pedro Albizu Campos, as a direct threat to this  transition. Law 53 was closely modeled after the US Smith Act of 1940, which 

criminalized advocating for the violent overthrow of the government. It was signed on  June 10, 1948, by Jesús T. Piñero, the first US appointed Puerto Rican governor.  The law effectively criminalized any expression of Puerto Rican nationalism or desire  for independence. Prohibited acts included: Owning or displaying a Puerto Rican flag  (even in private homes). The Singing of patriotic songs or whistling the national anthem  (La Borinqueña) was forbidden. The Speaking or writing in favor of independence or  against the US government was banned. Any assembling or organizing any group with  pro-independence goals was outlawed. Violators faced up to 10 years in prison, a  $10,000 fine, or both. Enforcement of the law led to a period of intense surveillance and  mass arrests: The law granted authorities the power to enter and search homes without  warrants to find contraband like flags or literature. In just one week in November 1950,  over 3,000 people were arrested across the island. Critics, such as Dr. Leopoldo  Figueroa (the only non-PPD member in the House), argued the law was unconstitutional  and violated the First Amendment rights of Puerto Ricans, who had been US citizens  since 1917. 

The Jayuya Uprising (1950): 

The uprising was a pivotal armed revolt led by Blanca Canales and the Puerto Rican  Nationalist Party against United States colonial rule. As part of a coordinated series of  protests across the island, insurgents took control of the town, burned the post office,  and declared the "Free Republic of Puerto Rico" The US backed government responded  with overwhelming force, declaring martial law and deploying the National Guard to  bombard the town with P-47 Thunderbolt warplanes. The National Guard, attacked, destroying 70% of Utuado and leaving Jayuya in ruins, effectively suppressing the  revolt. The names of the specific pilots who flew the P-47 Thunderbolt fighter planes to bomb Jayuya and Utuado, Puerto Rico, in October 1950 are not mentioned in the historically  documented accounts of the uprisings, which often cite the pilots only as part of the US  backed Puerto Rico National Guard or US military forces. The bombing was ordered to  suppress the Nationalist revolts led by Pedro Albizu Campos, with major air attacks  targeting the towns of Jayuya and Utuado on October 30–31, 1950. 

US supplied P-47 Thunderbolt fighter planes were used to strafe and bomb the towns.  The attacks were conducted by the 296th Regiment of the Puerto Rico National Guard  under the authority of the Puerto Rico Adjutant General, Major General Luis R. Esteves,  under the direction of the US backed government. The bombing, intended to curb the  independence uprising, destroyed several blocks in Jayuya and resulted in significant  destruction in Utuado. In Jayuya, approximately 70% of the municipality was destroyed  by the combined force of air strikes and ground artillery. 

The planes were hangared in US airfields, maintained with US equipment, and flown by  US trained personnel, contradicting assertions that the event was merely an internal  "incident between Puerto Ricans”. The military operation, was authorized by Governor  Luis Muñoz Marín under martial law. The overall military command and political  authorization for the strikes involved the following individuals: Major General Luis R.  Esteves was the Puerto Rico Adjutant General who commanded the Puerto Rico  National Guard during the suppression of the uprisings. Governor Luis Muñoz Marín  declared martial law and ordered the National Guard to regain control of the towns. 

Brigadier General Alberto A. Nido a co-founder of the Puerto Rico Air National Guard  (established in 1947), whose personal participation as a pilot in these specific bombings  is often a subject of historical debate rather than explicitly confirmed in general  summaries. Historical records often focus on the leaders of the revolt, such as Blanca  Canales and Pedro Albizu Campos, while the identities of the specific National Guard  pilots remain largely anonymous. 

Blanca Canales and a group of Nationalists seized control of Jayuya, raised the then outlawed Puerto Rican flag in the town square, and declared Puerto Rico a ‘free  republic’. The rebels attacked the local police station and burned down the US post  office and the Selective Service building. The uprising was suppressed after three days  by the Puerto Rico National Guard, which utilized P-47 Thunderbolt fighter planes to  bomb and strafe the town, followed by ground artillery and infantry. Much of the town  was leveled by the aerial bombardment, which was later described by the New York  Times as making Jayuya look like it had been hit by an earthquake. Across the island,  

the 1950 revolts resulted in approximately 28 deaths and dozens of injuries.   In November Puerto Rican nationalists Oscar Collazo and Griselio Torresola attempted  to assassinate President Truman in Washington. The were aiming to highlight their push  for Puerto Rican independence. In the ensuing shootout, White House police officer  Leslie Coffelt was mortally wounded but managed to kill Torresola, while Collazo was  wounded and captured. Truman, who was was unharmed and later commuted Collazo's  death sentence to life in prison, arguing against creating a martyr.

The Cold War in Puerto Rico 

The United States government and the local administration under Luis Muñoz Marín  heavily amplified fears of a communist takeover to delegitimize the Puerto Rican  independence movement in the 1950s. The validity of these fears may have been  largely exaggerated. While some left-leaning intellectuals and small, fringe radical  groups within the broader movement did embrace Marxist thought or communist  solidarity, the mainstream Nationalist Party—led by Pedro Albizu Campos—was  primarily motivated by cultural nationalism and anti-colonialism. 

The 1950s "Red Scare" in Puerto Rico served more as a geopolitical tool for the US to  secure military, economic, and strategic interests at the height of the Cold War and to  stifle democratic opposition. Were the repression, surveillance, and labeling of all  independence activists as "communist puppets" designed to marginalize the pro independence cause in favor of the newly created Commonwealth status or were they  more indicative of the pervasive fear of communism of the times or both? Two things  can be true at once. 

In the 1940s, with the construction of a naval base and a bombing range, Puerto Rico  became a major geo-political military outpost for the United States. For a power  claiming global leadership in a decolonizing world, however, the archipelago’s colonial  condition underscored the dissonance between American democratic rhetoric and  imperial reality.  

The questionable solution was a deal that, in 1952, gave Puerto Rico a degree of self government without changing its legal status as an “unincorporated” US territory. The  US publicly claimed Puerto Rico was now more autonomous while using repressive tactics such as FBI surveillance, arrests, destabilization, and other methods developed  in Washington to silence activists and political parties pushing for full independence. Under J. Edgar Hoover the FBI targeted Puerto Rican ‘communists’ as part of an  offensive against pro-independence parties and activists generally. In 1954 activists  were indicted under the Smith Act by the House Un-American Activities Committee  (HUAC) during the McCarthy era. The Smith Act of 1940, or Alien Registration Act,  made it a federal crime to advocate for, organize, or teach the violent overthrow of the  US government. Enacted during rising global tensions, it required foreign national  registration and was used to prosecute accused ‘socialist and communist’ leaders  during the Red Scare. The Puerto Rican independence movement persisted despite the  FBI deploying the covert tactics of COINTELPRO against them. COINTELPRO  (Counter Intelligence Program) was a series of clandestine and often unlawful projects  run by the FBI from 1956 to 1971, aimed at surveilling and neutralizing domestic  political organizations. Under Hoover, the program aimed to "expose, disrupt, misdirect,  discredit, or otherwise neutralize" perceived subversive threats.  

Blanca Canales was sentenced to life plus 60 years but was eventually pardoned in  1967. The US media continued to characterize the events as an "incident between  Puerto Ricans" to downplay the anti-colonial nature of the struggle. While the revolt  failed to achieve immediate independence, it pressured the US to reform Puerto Rico's  status, leading to the creation of the Commonwealth (Estado Libre Asociado) in 1952. 

Historian John F. McKeon lives on St. Croix and Southampton NY. He holds degrees from  Trinity College Dublin,(MPhil with Distinction).St. Joseph's University in NYC (BA Summa  Cum Laude Degree) East Asian History with a Philosophy Capstone Minor in Labor, Class  and Ethics. John earned a certificate from the Oxford University Epigeum Research Integrity  Center. He is a member of the Society of Virgin Island Historians.

Recommended Readings 

Chamu, Gustavo Alonso (2025) "Reverberations of the 1950s Puerto Rico Nationalist  Independence Movement," History in the Making: Vol. 18, Article 6.  Available at: https://scholarworks.lib.csusb.edu/history-in-the-making/vol18/iss1/6 

Anti-Communism in Washington’s Caribbean Colony by Steve Howell: University of  Massachusetts Press Series: 2026 Culture and Politics in the Cold War and Beyond 

. 

Insurrection TIME Magazine, 11/13/1950,Business Source Premier 

COMMUNIST ACTIVITIES AMONG PUERTO RICANS IN 

NEW YORK CITY AND PUERTO RICO (NEW YORK CITY—Part 1) HEARINGS BEFORE THE  COMMITTEE ON UN-AMERICAN ACTIVITIES HOUSE OE REPRESENTATIVES EIGHTY SIXTH CONGRESS FIRST SESSION NOVEMBER 16 AND 17, 1959 Printed for the use of the  Committee on Un-American Activities