Key Idea and Details:Generate a list of types of people represented in the poem by those who ""mumble in the dark."" What do the groups have in common?

This question is about the poem "Let America Be America Again" by Langston Hughes

The people who are represented in the poem as those who "mumble in the dark" are the poor, the blacks, the farmers, the Indians, the women, the immigrants and the weak.

These groups are deprived of rights and freedoms within America.

Explanation:

The speaker of the poem shows how America is not for him as it is for powerful people who have no deprivation of freedom, rights and happiness that America can provide. This speaker represents all the people who are "murmuring in the dark," who are the people who claim to have the full experience of the American dream, but who are deprived because they are in a disadvantaged position before society. These people are the poor, the blacks, the farmers, the Indians, the women, the immigrants and the weak.