May Revolution
The mutiny of Aranjuez in 1808 led King Charles IV of Spain to abdicate in favor of his son, Ferdinand VII. Charles IV requested that Napoleon restore him to the throne; instead, Napoleon crowned his own brother, Joseph Bonaparte, as the new Spanish King. These events are known as the Abdications of Bayonne. Joseph's coronation was met with severe resistance in Spain, which started the Peninsular War, and the Supreme Central Junta took power in the name of the absent king. This also led to Spain switching allegiances from France to Britain. France eventually invaded Sevilla, and a Council of Regency based in Cadiz replaced the disbanded Supreme Central Junta.
May Revolution
On the morning of May 25, in spite of bad weather, a crowd gathered in the Plaza de la Victoria, as did the militia led by Domingo French and Antonio Beruti. They demanded the recall of the Junta elected the previous day, the final resignation of Cisneros, and the appointment of a new junta that did not include him. Historian Bartolomé Mitre stated that French and Beruti distributed blue and white ribbons, similar to the modern cockade of Argentina, among those present. Later historians doubt it, but consider it possible that the revolutionaries used distinctive marks of some kind for identification. It was rumored that the Cabildo might reject Cisneros' resignation. Because of delays in issuing an official resolution, the crowd became agitated, clamoring that "the people want to know what is going on!".