Answer:
Inequality and racism.
Step-by-step explanation:
Lorraine Hansberry's "A Raisin in the Sun" is about the Younger family's survival during the 1950s. The plot revolves around the few earlier years of the African American family living in the South side of Chicago.
The character of Mr. Lindner is the representative of the Youngers' new neighborhood of the Clybourne Park Improvement Association. He had been sent by the other residents to try to persuade them not to move into the neighborhood. Through his character, the theme of racism and inequality is made more prominent and in full power. He even offered a bribe to the Younger family to make sure they don't live and dwell among the all white residents of Clybourne Park.