#2 Unwholly by Neal Shusterman

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Thanks to Connor, Lev, and Risa—and their high-profile revolt at Happy Jack Harvest Camp—people can no longer turn a blind eye to unwinding. Ridding society of troublesome teens while simltaneously providing much-needed tissues for transplant might be convenient, but its morality has finally been brought into question. However, unwinding has become big business, and there are powerful political and corporate interests that want to see it not only continue, but also expand to the unwinding of prisoners and the impoverished.

Second book in the Unwind series. We start to learn more about how this situation arrose in the first place.

Joan