People always believe what they are doing is correct. On the other side of the story, the evil regards himself/herself as the hero who saves the world.
Nobody is born as a racist. Children do not know the difference between the colour of skin.
Aibileen suddenly starts telling May Mobley a story of her own creation, which does not even have a plot, and May Mobley says "tell it again". After the fourth time, she falls asleep. This tender moment just melts me down.
This introduces the historical background of this chapter, which plays a vital role throughout the book.