What happens in chapter 1 how to kill a mockingbird

Scout, the narrator, remembers the summer that her brother Jem broke his arm, and she looks back over the years to recall the incidents that led to that climactic event. Scout provides a brief introduction to the town of Maycomb, Alabama and its inhabitants, including her widowed father Atticus Finch, attorney and state legislator; Calpurnia, their "Negro" cook and housekeeper; and various neighbors.

The story starts with the first summer that Scout and Jem meet Dill, a little boy from Meridian, Mississippi who spends the summers with his aunt, the Finchs' next-door neighbor Miss Rachel Haverford.

From the children's point-of-view, their most compelling neighbor is Boo Radley, a recluse whom none of them has ever seen. Dill's fascination, in particular, leads to all sorts of games and plans to try and get Boo to come outside. Their attempts culminate in a dare to Jem, which he grudgingly takes. Jem runs into the Radleys' yard and touches the outside of the house.

cockroaches and rats most likely symbolize in the play is :