1984 Braves–Padres bean brawl

On August 12, 1984, during an afternoon game at Atlanta–Fulton County Stadium, a series of brawls broke out between the San Diego Padres and the Atlanta Braves over a series of attempted beanings and retaliations. The game ended with a record 13 ejections and also 5 arrests, with a few spectators getting involved in the ruckus.

Source: Wikipedia — 1984 Braves–Padres bean brawl (CC BY-SA 4.0)