If a kohen killed an Arab, may he still recite the Priestly Blessing or serve in the Temple?

This source-based Torah study examines the question: If a kohen killed an Arab, may he still recite the Priestly Blessing or serve in the Temple? It follows the canonical Hebrew discussion through the weekly portion and the classical sources cited there, preserving the distinctions and review status of the original. This localized layer is for study and discovery only; it is not a practical halakhic, medical, legal, safety or pastoral ruling.