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.
Precarity
In 2001 the Italian collectives and networks identifying with the global justice movement, as they were preparing for the Genoa counter-summit just months away, inaugurated in Milan a new kind of first of May, MAYDAY, spelling it like the international call for rescue, and explicitly centering it on the street representation of the so-called "precarious generation." It employed carnival-like techniques of agitation (allegorical wagons, media subvertising, colorful actions etc.) in imitation of gay prides and love parades of the 1990s. Italian activists meant it as a revival of the wobbly traditions of May Day, and consequently as a break with traditional union representation and social-democratic compromise that had allowed precarity and social insecurity to spread unchecked to reach critical levels in all of Europe, thus repeating the experience of UK and US economies with a few years' lag.