The answer is…
The town of Ivrea, in the Piedmont region, has a unique carnival celebration with medieval roots. The carnival includes a colorful parade followed by orange-throwing battles in the center of town.
The origins of the orange battle are murky, but local folklore cites the story of a young peasant girl named Violetta, who rebuffed the advances of a ruling tyrant in either the 12th or 13th century. She decapitated him and chaos ensued, with other villagers eventually burning the castle where he lived.
During the present-day reenactment, one girl is chosen to play the role of Violetta, and dozens of aranceri (orange-throwers) representing both the tyrant and the peasants throw oranges at each other. The oranges are meant to represent stones and other ancient weapons.
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