While if done properly, this isn't in and of itself evil, it leads to a slippery slope. Larry Niven wrote stories of a future where the organ banks were always

While if done properly, this isn't in and of itself evil, it leads to a slippery slope. Larry Niven wrote stories of a future where the organ banks were always empty, and the population voted the death penalty in for lesser and lesser crimes. The tale I recall has a man trying to escape from his capital trial for running a red light.