The name of the neighborhood they were moving into
Another play was written as a sequel to this, but I can't remember the name. It was named after the neighborhood the poor black family moved into.
The follow-on play shows the mistreatment they received there as the first family to integrate it, and then years later another installment when civil rights 'had been won' (as we know it's backsliding now in 2014).
"He who swaps his liberty for the promise of 'security' deserves neither." Ben Franklin