Tone of this poem

Harlem
What happens to a dream deferred?
Does it dry up
like a raisin in the sun?
Or fester like a sore—
And then run?
Does it stink like rotten meat?
Or crust and sugar over—
like a syrupy sweet?

Maybe it just sags
like a heavy load.

Or does it explode?

The tone of this poem is contemplative and reflective. The speaker is questioning and exploring the consequences of unfulfilled dreams, considering the possible outcomes with a sense of curiosity and introspection. There is a sense of melancholy and urgency in the imagery used to convey the potential impact of a deferred dream.