If the prisons are focused on rehabilitation and reintegration instead of just keeping people locked up and treating them like they're not human? Yes. Do I believe prisons in the US are like that? No.
Genuine question. What do you think should happen with people that have committed violent crimes? If they have no interest in voluntary rehabilitation, imprisonment with the goal of rehabilitation seems to be a better alternative to just letting them roam freely and do as they please. And it seems a lot better than the death penalty. Specifically for reasons like what we're seeing here. You can release someone from prison if evidence comes later that casts doubt on their guilt. It doesn't prevent the harm that has already been caused, but it gives them an opportunity to take back their life. You can't un-execute somebody.