A sentence of something like 20 years + evaluation of suitability for release does a fine job of dealing with the extreme cases you mention without discarding the idea of rehabilitation in less obvious cases.
And yes, I think you go ahead and let the terrible dictator read books or whatever. That's much easier to accept than society occasionally getting together and executing an innocent.
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Are prisons here to punish people or to solve problems in society?
Sometime people's sense of fairness is pitted against the idea of rehabilitation.
Fixing the root of problems mean dealing with the dredge of society, the people who deserved it the least.
Imaging rehabilitating a tinpot dictator who killed million so that he can feel remorse for what he did and find a productive living.
A sentence of something like 20 years + evaluation of suitability for release does a fine job of dealing with the extreme cases you mention without discarding the idea of rehabilitation in less obvious cases.
And yes, I think you go ahead and let the terrible dictator read books or whatever. That's much easier to accept than society occasionally getting together and executing an innocent.