An officer (police officer) is someone who fights against crime, and helps prevent it from happening. A criminal starts crime, and causes trouble for the police officers.
Answer:
The reader learns that Dill has no home.
Explanation:
“Grandma says he hasn’t got a home—”
“Has too, he lives in Meridian.” “—he just gets passed around from relative to relative, and Miss Rachel keeps him every summer.”
This very brief passage gives us further insight into Dill's character, and once again reminds us that things are not always as they seem.