Thank you for the opportunity to help you with your question!
I assume that you are talking about Gwendolyn Brooks' poem by this name. In that poem, the main theme is that a certain group of young men (presumably a subset of African American young men) has cultural values that are destructive. This can be seen most clearly in the last line, where we find out that these guys "die soon."
Brooks is pointing out that the choices these people make and the things that they value lead them to an early grave. She is saying that they (and not society or anyone else) are responsible for their problems
Please let me know if you need any clarification. I'm always happy to answer your questions.