One source that further proves that discrimination and oppression limits upward mobility in class systems, is the play A Raisin in the Sun by Lorraine Hansberry. The play tells the story of a family living in Chicago in the 1950’s showing both the good and bad aspects of being a black family at that time. One major point in this play that showed the Younger family’s struggle dealing with discrimination and oppression, was when a spokesperson from the Clybourne Park Improvement Association, came to talk with the family about their plans to move into Clybourne Park. He talks ambiguously telling the family that the community “voted” against them moving into the park. “‘I want you to believe me when I tell you that race prejudice simply doesn’t enter into it. It is a matter of the people of Clybourne Park believing, rightly or wrongly, as I say, that for the happiness of all concerned that our Negro families are happier when they live in their own communities’” (Hansberry 118). This quote shows just how discrimination and prejudice affects the family’s want to move into Clybourne Park and how what Linder says to them creates a sense of pressure to not move in. The whole Younger family experienced struggles dealing with these opinions people had of them, and a lot of them had to put aside their dreams because of this discrimination. This happens much too often to families everywhere, many putting aside dreams and needs all because of people's viewpoints on their lives and social “norms”. That being only one example of how many people aren’t able to achieve the American Dream, A few more sources support the claim. The next being the novel The Jungle by Upton Sinclair.