"Dream Deferred" theme

In my opinion, "Dream Deferred was an easy read...therefore I liked it very much. However, that is obviously not the only reason, of course. I enjoyed reading about how he compared deferred dreams to different objects or ideas. By comparing it to a "raisin in the sun", or "fester[ing] like a sore, the speaker then easily brings about a very good theme. If summarized in one sentence, I would say the theme is how putting off your dreams or goals only brings about negative effects. Through the main body of the poem, he compared it to images that are easily comparable to a deferred dream. However, the last line is different from the rest. It is more of a metaphor and stands alone to make it stick out. It reads "Or does it explode?" and this line takes a little more interpretation than the others. This is because it can be interpreted a variety of ways. How I interpreted it, however, is that a deferred dream could bring about violence, for example, a dream about civil rights.