This is an opportunity to show that you understand Schelling (and really all of this section) and that you can connect it back to the "boat diagram" that is the framework of the whole book (look back to the introduction if you don't get this part).
Who is Schelling? What did we read?
Not the little details, but overall, what was he up to?
Can you explain what "micromotives, macrobehavior" means?
Do you understand the boat diagram itself?
How does Schelling suggest that people create the "macro level social conditions" to which they are reacting?
Can you talk about this in terms of it being a feedback loop? Can it be both a reinforcing (positive) and a limiting (negative) feedback loop? Explain.