In “The Lottery,” what kind of ethics informs the practices/traditions of the townspeople?

In “The Lottery,” what kind of ethics informs the practices/traditions of the townspeople? On what moral grounds can Tessie Hutchinson claim, at the end of the story, that what she experiences isn’t fair? What do you make of her realization at the end? What is the theme/message of the story, and how does the narration, setting, characterization, symbolism and/or language of the story shape your interpretation? Provide specific details from the story to support your answer.