Family Ties (1982) : 7x17

The Keatons are shocked to realize that racism is alive and well when their black friends move into a house across the street. During dinner with Steven's colleague Gus Thompson and his wife Maya, the Keatons learn that the couple is having trouble finding a house to buy. When Elyse informs them that the house across the street is up for sale, Gus and Maya (who are black) gently raise the subject of race. Although Steven admits that there are no black families in the neighborhood, he believes race to be a non-issue.