What did Shawshank Redeem?

Rating: 10/10 (23 July 2013)

As English is not my native tongue, it is a bit hard to grasp what does 'Redemption' means in Shawshank's Redemption. In my understanding, a prisoned is helpless, who can he save?
It is even more confusing that Shawshank is an innocent guy. Surely the word 'revenge' will be more appropriate to replace 'redemption' in this context. As the film unfold, it becomes clear to me that Shawshank redeemed himself and others as he wasn't hateful. He calmly accept the unfairness in his life and dealt it with dignity and resilience. Some time, we are caged in a prison that's created by ourself. We often cry out 'it is unfair!' or 'It is not just!' But how often do we actually take any actions against them?
Do we have the confidence that one day the prison wall will eventually get through by a small tool? Can we calmly deal with the pressure and threat that consume us mentally and physically? Are we ready to craw through a gutter that's full of sh*t to reclaim our entitled freedom?
When we in despair, it is encouraging to reflect on this fictional guy - Shawshank. Life some time is not about revenging, it is about redeeming. It is easier to revenge, but cooler to redeem.