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 Conspiracy
Prague and a few towns were put under a state of emergency (also called "the siege", "stav obležení"), press was put under censorship by the military and a military commission was established to investigate the conspiracy. The emergency was only lifted 4 and a half years later, on September 1, 1853. Seventy-nine young radicals were sentenced to prison, and most of them were released in general amnesty on May 8, 1857. Others fled to Britain, but had to devote their efforts to survival with little ability to further the revolution as exiles.