Here's the thing: actions have consequences. Bad actions result in bad consequences. Such is the learning process of lots of species. Do you think training pets by reinforcing good behaviour and punishing bad behaviour is modern and supported by "state propaganda", whatever that means?
I do believe that prison systems can be good at rehabilitation. Maybe not in the US, where you seem to be from, but it's working in many other countries in the world, look at the Nordic countries' prison system if you want proof. And even if the prison system doesn't manage to rehabilitate the person, it serves as a punishment. I don't see what's wrong with punishing behaviour that has been deemed unacceptable by society. At least it's better than doing nothing, and in my opinion has more of an impact than doing nothing and surrounding him "with a loving community".
I do believe that prison systems can be good at rehabilitation. Maybe not in the US, where you seem to be from, but it's working in many other countries in the world, look at the Nordic countries' prison system if you want proof. And even if the prison system doesn't manage to rehabilitate the person, it serves as a punishment. I don't see what's wrong with punishing behaviour that has been deemed unacceptable by society. At least it's better than doing nothing, and in my opinion has more of an impact than doing nothing and surrounding him "with a loving community".