Does imprisonment meet its aims? (public protection)
Impprisonment works by taking offenders out of society for the duration of their term, so they cannot offend (however, they can offend in the prison). There are several ways in which imprisonment can protect public:
1. Whole life sentences keep offenders permanently off the streets.
2. Prisoners serving indeterminate sentences can be kept in jail for as long as they are deemed a danger to the public
3. There has been a trend towards longer sentences, so the public remains protected from offenders for longer. This inludes mandatory minumum sentences.
4. Most prisoners are released on licence and under supervision. If they become a danger to the public they can be recalled to prison.
However, prisons can be "schools for crime" where inmates will acquire new skills and contacts, thus while prisons protect the public while offenders are in jail, in may lead to greater harm upon their release. Also, keelping prisoners inside is very costly, critics argue that these funds could be used for other ways of protecting the public.