Deepak, you are missing the point: there will always be corruption in the "system". Its up to us as citizens to stand up and be counted - and there is always a price for the truth. The witnesses were absolute COWARDS, and the police investigators were worse.
By your skewed logic, there should never have been a struggle for freedom, the 'system' would be blamed. People gave their lives, and still do, for truth and justice, as thats the foundation of any decent institution/state. The high-society (dregs?) have, by their silence, connived in the murder of Jessica, and in the murder of justice. What if it was your sister who was murdered? You would sing a different tune, I am sure!