Which theme from the play is illustrated in the following lines?

Lindner...And at the moment the overwhelming majority of our people out there feel that people get along better, take more of a common interest in the life of the community, when they share a common background... as I say, that for the happiness of all concerned that our negro families are happier when they live in their own* communities. *italicized
-material wealth
-dreams
-racial discrimination

Question

Which theme from the play is illustrated in the following lines?

Lindner...And at the moment the overwhelming majority of our people out there feel that people get along better, take more of a common interest in the life of the community, when they share a common background... as I say, that for the happiness of all concerned that our negro families are happier when they live in their own* communities. *italicized
-material wealth
-dreams
-racial discrimination <-- My answer
-Afrocentrism
Could someone check this for me and give me thoughts on what you think the answer it is?

anonymous0093 · Answer

I forgot to mention that this is an excerpt from the play A Raisin in the Sun.