In the Hugh Finn killing there were many offers made to care for him at no cost in order to keep him from dying a horrendous, cruel death by dehydration.
In the case of Baby Doe, an infant born with Downs Syndrome and a common, easily correctable, defect of his swallowing tube was allowed to die of dehydration by his parents and the courts, even though hundreds of families asked to be allowed to adopt him. He was considered defective and therefore able to be killed. No infant without Downs Syndrome and with the same correctable defect would have been so easily discarded.
It is important to realize that this is about dehumanizing populations, and creating a utilitarian society.