September 16, 1810 | The Grito de Dolores Begins Mexico’s Independence War

Explore the full date: Today in History – September 16.

Before dawn on September 16, 1810, a church bell called people into the center of Dolores, a town in the intendancy of Guanajuato. The conspiracy against Spanish authority had been exposed. Arrests had begun. Miguel Hidalgo y Costilla, the parish priest, and his allies could surrender or act before their plan was ready. They chose action.

What Hidalgo said to the gathering is not preserved in a contemporary transcript. Later versions differ, and familiar patriotic formulations belong partly to memory and ceremony. What the evidence supports is clear enough: Hidalgo urged revolt against bad government, invoked powerful religious and political loyalties, and helped turn a clandestine plot into an open insurrection.

New Spain in a crisis of legitimacy

The uprising began inside a global imperial crisis. In 1808 Napoleon invaded Spain, forced the abdications of Charles IV and Ferdinand VII, and installed Joseph Bonaparte. Across the Spanish world, subjects argued over who possessed legitimate authority when the monarch was captive. Local juntas formed in Spain and Spanish America; some claimed to govern in Ferdinand’s name, while deeper questions about representation and sovereignty surfaced.

New Spain was wealthy, populous and profoundly unequal. Peninsulares—people born in Spain—dominated many senior offices. American-born Spaniards, or criollos, could possess wealth and education yet resent political exclusion. Indigenous communities, mestizos, free people of African descent and enslaved people lived under different legal categories and faced tribute, labor demands, land pressure and racial hierarchy. Those divisions did not automatically produce a single independence movement, but they gave rebellion many possible meanings.

Hidalgo was an educated priest with interests extending beyond parish routine. In Dolores he supported local crafts and cultivation. He also moved within networks discussing political change. Military officer Ignacio Allende, Juan Aldama, Josefa Ortiz de Domínguez and others were connected to the conspiracy centered on Querétaro. The conspirators originally planned a later rising; discovery forced their timetable forward.

The warning from Querétaro

Authorities learned of the plot in September. Josefa Ortiz de Domínguez, married to Querétaro’s corregidor, succeeded in sending a warning. Messengers carried news toward the conspirators. On the night of September 15–16, Hidalgo, Allende and their companions met in Dolores and decided not to wait.

They released prisoners and detained local officials regarded as opponents. The church bell summoned residents. Government accounts and later histories agree on the call to arms, but not on a verbatim speech. Some remembered loyalty to Ferdinand VII; others emphasized religion, the Virgin of Guadalupe, America, or opposition to bad government. The safest historical conclusion is that the “Grito” was an event and a mobilizing appeal, not a securely preserved script.

The first following was small. It grew rapidly as the insurgents moved through the Bajío. At Atotonilco they took an image of the Virgin of Guadalupe that became associated with the movement. Peasants, artisans, mine workers, ranch laborers and members of different social groups joined, though they did not all share the same aims.

From a call to a mass rebellion

The insurgent force captured San Miguel and Celaya, then approached Guanajuato. At the Alhóndiga de Granaditas, royalists and civilians sheltered inside a fortified granary. The building fell on September 28, and killing and looting followed. The violence exposed the gulf between popular grievances, elite political plans and the limited control insurgent leaders exercised over a rapidly expanding army.

Hidalgo’s followers later won at Monte de las Cruces and reached the approaches to Mexico City. Hidalgo turned away rather than attack the capital, a decision historians still debate. Royalist forces recovered. On January 17, 1811, the insurgents suffered a decisive defeat at Calderón Bridge. Hidalgo, Allende, Aldama and other leaders were captured; Hidalgo was executed in Chihuahua on July 30, 1811.

The rebellion did not end with him. José María Morelos gave it stronger political structure and articulated independence and social reform. After Morelos’s defeat, regional warfare continued under leaders including Vicente Guerrero and Guadalupe Victoria. In 1821 a realignment between Guerrero and the former royalist Agustín de Iturbide produced the Plan of Iguala and the Army of the Three Guarantees. Mexico City received the new army on September 27, 1821.

What independence did—and did not—resolve

Independence ended Spanish imperial rule, but it did not instantly resolve the inequalities that had shaped New Spain. The new country faced war damage, contested institutions, regional power struggles and enduring social hierarchy. Nor was the movement a simple national unity story from its first morning. Royalists and insurgents both included people born in the Americas; communities chose sides for local as well as ideological reasons.

Recognizing that complexity does not diminish September 16. It explains its power. The day marks the moment when a political conspiracy became a mass conflict whose direction no leader could fully control.

How the Grito became a national ritual

Mexico’s independence is celebrated on September 16, not on the 1821 date when the war ended. Each year the president reenacts the Grito from the National Palace on the night of September 15, ringing the bell associated with Hidalgo and naming heroes of independence. State and municipal leaders hold parallel ceremonies.

The modern ritual is commemoration, not a transcript of Hidalgo’s words. It connects the uncertain, urgent gathering at Dolores with the later nation that claimed it as a beginning. That distinction—between the documented event and the tradition built around it—is part of the history, not a reason to choose one over the other.

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What the Grito actually began

The uprising that began at Dolores was not an instant declaration of a modern Mexican nation. New Spain was still part of the Spanish monarchy, and the political crisis had been developing since Napoleon’s invasion of Spain in 1808. The removal of King Ferdinand VII created competing claims about where legitimate authority should rest. In New Spain, those debates mixed with long-standing social, racial and economic tensions.

Hidalgo and other conspirators in Querétaro originally planned a later rising. When the conspiracy was exposed, the timetable collapsed. Messages warning the insurgent leaders reached them in time to act. In the early hours of September 16, Hidalgo gathered supporters in Dolores and called them to revolt. The exact wording of his appeal is not preserved in a contemporary transcript, which is why modern historians treat later versions of the speech cautiously.

From Dolores to a mass insurgency

The movement grew rapidly after leaving Dolores. At Atotonilco, Hidalgo took an image of the Virgin of Guadalupe that became one of the most recognizable symbols of the insurgency. The rebel force then moved through towns in the Bajío, drawing in thousands of followers. Its social composition was broad and unstable: priests, officers, artisans, laborers, Indigenous villagers and others entered a movement whose political goals were not identical for everyone involved.

That scale gave the revolt momentum but also made control difficult. Violence against Spaniards and property accompanied some insurgent advances. Royalist authorities responded with military force, political condemnation and excommunication. The war that followed lasted more than a decade and passed through several distinct phases after Hidalgo’s capture and execution in 1811.

Independence was still eleven years away

The association between September 16 and Mexican independence can hide the length and complexity of the struggle. Hidalgo did not live to see independence achieved. Other leaders—including José María Morelos, Vicente Guerrero and eventually Agustín de Iturbide—carried the conflict through changing political circumstances. Independence was consummated in 1821 with the entry of the Army of the Three Guarantees into Mexico City and the establishment of a new political order.

September 16 became the symbolic beginning of that process. The anniversary is therefore less a celebration of a single completed act than a commemoration of the moment when armed revolt began.

Memory, ceremony and the national holiday

Modern Independence Day ceremonies re-create the Grito with ritual language, bells and public acclamation. That tradition gives the event a clarity that the historical moment itself did not possess. The insurgents of 1810 were acting in a world of contested loyalties, incomplete information and rapidly changing political possibilities.

Remembering that uncertainty makes the episode more, not less, significant. A local conspiracy forced into premature action became the opening of a war that transformed New Spain and ultimately produced an independent Mexico.

Primary institutional context: Mexico’s Secretaría de la Defensa Nacional and the Instituto Nacional de Estudios Históricos de las Revoluciones de México document the September 16 uprising and its place in the independence movement.