Sidney Poitier, Spencer Tracy and Children from Same-Sex Relationships

If you're watching this video thinking "how stupid could they have been", then perhaps in 40 years time, society will think the same thing about children from same-sex relationships.
The scene is from the 1967 classic "Guess Who's Coming To Dinner". Spencer Tracy's white daughter has brought home Sidney Poitier, the man of her dreams. They have asked for Spencer Tracy's approval of their relationship.