One of my favorite books these days is called What are Old People For? by William Thomas, M.D. If you need your consciousness raised about ageism–and most of us do, I think–this is the book to read first.
Now, Dr. Bill has written a novel. This is actually his second novel, and it is called Tribes of Eden. Set in a post-apocalyptic America, the book addresses the issues of loss of freedom and inter-generational cooperation and eventual triumph over an opportunistic totalitarian authority. It is available in paperback or electronically.
Dr. Bill talks about the book in this video.
You can see an excerpt of the book by clicking this link.