Coincidence is not a form of irony. Sarcasm obviously is, Dramatic is when the reader/viewer knows more than the character in the plot. Situational irony is when the opposite of what's expected happens, and Coincidence is not an irony.
As the writer forms an idea of what he wants to write, he should begin to narrow his vision and focus on a specific topic and tackle what that topic entails.
The scene opens with a brawl on the streets of Verona between servants from the affluent Montague and Capulet households. While attempting to stop the fight, Benvolio (Romeo's cousin) is drawn into the fray by Tybalt, kinsman of the Capulets and Juliet's cousin.
