Night of the Bottle Fight

The Night of the Bottle Fight was an incident that took place in the Empire of Brazil in 1831. The event involved the Portuguese that supported the Emperor Dom Pedro I and the Brazilians that opposed him. It was one of the main events from the period that immediately preceded the monarch's abdication (in April 1831).
History.
The "Night of the Bottle Fight" involved a riot that occurred in opposition to Pedro I(then emperor of Brazil). In 1830, prior to the Night of the Bottle Fight, Líbero Badaró, a journalist was assassinated in Sao Paulo for denouncing Dom Pedro I's politics. The perpetrators were allied with the emperor's politicians. The assassination unleashed a wave of protests against Dom Pedro I's government.
Opposition continued in February 1831, when Dom Pedro I travelled to Minas Gerais and was received with hostility by the locals. The conflict reached its climax on the night of February 13, when, during a party for the emperor’s reception organized by his Portuguese supporters, Brazilians attacked with stones and bottles. This involved a dispute between allies from the Portuguese party that favored the emperor, and liberals from the Brazilian party who opposed him. This episode played an important role in the political crisis that resulted in the abdication of Dom Pedro I on April 7.