One possible main theme could be oppression. The sacrifice of black youth could symbolize the long - standing oppression that black people have faced in society. It might show how they are often the targets of violence and injustice.
Another theme could be the value of life. By highlighting the sacrifice of black youth, the story may be forcing readers to consider how all lives should be equally valued, yet in the context of the story, black youth are being treated as expendable. This could also tie into themes of racism and discrimination, as it shows that in this fictional world (or perhaps as a commentary on the real world), black youth are not given the same regard as others.