Presumption of guilt? The guy admits he did it, I'm presuming nothing at all. His testimony was that he bought the gun, was carring it, called the priest over to his car, and shot him three times. Where's my presumption? The defense was that he suffered from a "temporary mental illness." Can't the same case be made for those who molest and kill little kids?
Secondly, the priest was not convicted of anything, or charged for that matter. We don't know if the priest is really guilty of anything.
This verdict, which the State can't really appeal, we have that whole double jeapardy thing ya know, makes it open season to kill people you perceive as having harmed you.