You are responsible for the world that you live in. It is not government's responsibility. It is not your school's or your social club's or your church's or your neighbor's or your fellow citizen's. It is yours, utterly and singularly yours.
There are always and only two trains running. There is life and there is death. Each of us rides them both. To live life with dignity, to celebrate and accept responsibility for your presence in the world is all that can be asked of anyone.
What comes forth from you as an artist cannot be controlled. But you have responsibilities as a global citizen. Your history dictates your duty. And by writing about black people, you are not limiting yourself. The experiences of African-Americans are as wide open as God's closet.