Her parents wanted to protest against segregation laws.
Explanation:
Lorraine Hansberry was an African-American writer. The story from her play A Raisin in the Sun overlaps with her real-life in several elements. So we can learn a lot about her views of the world from it. Starting from one element that doesn`t enlace - family from the story was poor and Lorraine`s family was relatively wealthy. But what was mutual is striving for equal rights. Both families decided to move to all-white neighborhood which cause wrath of the people living there (South side of Chicago) - so racial violence from neighbors. There are African elements - Beneatha`s boyfriend symbolizes Lorraine`s uncle who was a professor of African history and influenced her to take a closer look at her roots. Lorraine was an acknowledged writer - Beneatha wanted to become a doctor (feminist moment). Lorraine`s family didn`t want to just give up and be oppressed, so one of the steps they took was to send her to a largely all-white public school.
It is not realistic because experiments with people are very diverse and complex. All people are different and adjust in one way or another in their way of being and in the changes. Time may not change anything when a person is not intending to change their actions or thoughts. The analysis is complicated and with the possibility of not getting the expected results.