Why did the narrator's mother get water from outside three times a day?

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites

Like a boil that can never be cured as long as it is covered up but must be opened with all its pus-flowing ugliness to the natural medicines of air and light, injustice must likewise be exposed, with all of the tension its exposing creates, to the light of human conscience and the air of national opinion before it can be cured. mood: tone:

Give me one sentince why james giblin shows historical figures in biased or unbiased ways. the story of young