Qisas Only Applicable If Victim Is “معصوم الدم”؟?
I think that there’s some confusion here. In your previous response you had stated “Person X was a proven murderer and hence liable to be killed by capital punishment in Islamic Law…” This only applies to a person who has already had his due process in the court of law and has been awarded death sentence. In this case, if someone kills this person, there can be room for relaxation in the law of Qisas. If a person is not already given death sentence by the court, as in the case of Salman Taseer example you cited above, then for all intents and purposes anyone who kills him has killed an innocent person. Whether or not the victim himself is later established to be a murderer is irrelevant as he did not have a chance to defend himself in the court of law.