Scout had to dress like a ham for Mrs. Merriweather's pageant. She was on her way to the pageant with Jem when Cecil Jacobs scares them. They make it to the pageant, but Scout ends up embarrassing herself. When they were both walking home, Bob Ewell attacks them.
This relates to TKAM because Scout dresses like a ham in the book. I was interested in this because the costume ends up saving Scout's life. Atticus and Aunt Alexandra couldn't go to the pageant, so Jem took Scout. This shows his generous side. Scout and Jem ends up getting attacked by Bob Ewell on the way back home. Scout gets crushed by Bob but was saved by the ham costume. Jem tried to defend both of them but ended up getting injured. This shows that he was also very brave.