Tybalt and Benvolio catch eye of each other. Tybalt's anger goes upon Benvolio leads to a commencement of a fight.
The fights have grabbed everyone in the city's attention, leading a huge ruckus upon the royal families, Capulet and Montague who also then began a fight.
The KIng of Verona, came in and broke the battle. Sick and tired of these fights which have occurred more than once. He now warned them If they ever start a fight again they'll earn the punishment of death.