But you don’t understand, It is necessary that you be Guilty.
And, while I don't think that civil suits against prosecutors is a good idea, there definitely needs to be a mechanism whereby prosecutors and judges who abuse the powers entrusted to them can be brought to justice.
Yes, some currently exist, but they are nowhere near strong enough (in my not so humble opinion) and the judges and prosecutors do not face much in the way of genuine sanction.
At the bare minimum, a prosecutor guilty of knowingly sending an innocent man to prison should be incarcerated for AT LEAST as long as the innocent man was.
In fact, you can make a case that a prosecutor that causes an innocent man to be sentenced to death has, at the very least, committed attempted murder and should be subject to the same penalty.
In cases where an innocent man is executed under the same circumstances -- the prosecutor should also be sentenced to die.