Pica Law (Legge Pica), a form of martial law, is established as the Italian government passes this anti-brigandage law to suppress resistance to Italian Unification.

Brigandage in Southern Italy had existed in some form since ancient times. However, its origins as outlaws targeting random travellers would evolve vastly later on to become a form of a political resistance movement, especially from the 19th century onward. During the time of the Napoleonic conquest of the Kingdom of Naples, the first signs of political resistance brigandage came to public light, as the Bourbon loyalists of the country refused to accept the new Bonapartist rulers and actively fought against them until the Bourbon monarchy had been reinstated. Some claim that the word brigandage is a euphemism for what was in fact a civil war.