A Dream Deferred by Langston Hughes

"What happens to a dream deferred?", the dream is delayed. Its deal with the Harlem Renaissance on why it was delayed. They keep putting to American Dream on hold i think. "Does it dry up like a raisin in the sun? Or fester like a sore-- And then run?" By this i think it is saying that they was putting it on hold and then they would get back to it.