"The Ones Who Walk Away from Omelas" is a short story written by Ursula Le Guin. The story won the Hugo Award for Best Short Story in 1974.
Reading the story is required for participation in this meeting. Full text is available here: http://www-rohan.sdsu.edu/faculty/dunnweb/rprnts.omelas.pdf
I will not say much about the story, other than that it is a philosophical parable and that I hope its last sentence will mark the starting point of our discussion:
"But they seem to know where they are going, the ones who walk away from Omelas."