A humane execution after a lengthy stay in prison at taxpayer expense is no longer an acceptable punishment for the extremely horrific nature of the evil crimes these subhuman animals keep right on committing.
Not only is the criminal justice system completely and utterly failing to reform these soulless, violent criminals, it is failing the hapless victims and their families a thousand times more in these despicable cases.
The first thing that should be done upon conviction of a heinous crime like rape and murder is physical castration. Then, the emasculated convicts ultimate fate should be decided by the victims family. If they decide he should die horribly just like their loved one did, then so be it, and let it be done. And if they are for some reason too afraid or intimidated to decide the proper punishments, then the rule should be the killer automatically receives the same horrible fate he dealt to the innocent victim.
And it might be a further deterrent if anyone who wished to personally witness his death could publicly attend it. As long as they didn't video record it and post it later to gloat.
This is the only deterrent I can think of that might actually make a subhuman animal stop to think about what they are fixing to do before they commit evil crimes in the first place.
Is this a politically correct solution? Obviously not. Would it be nearly 100% effective in stopping these sorts of barbaric, violent crimes? I think so. And only the mad dogs commiting these horrific crimes will be subject to this fate. Then real justice will finally be served for the victims and their families.