If the person you are killing is actually helping someone get away with a crime, you are definitely complicit in the crime. So I guess based on the premise that there's the possibility that it could be doing more harm than good, also possibly making you complicit in a crime, I would say I would absolutely not kill the person. If someone was robbing a store, the store owner comes out with a huge sawed off shot gun, he's about to blow the head off of the robber, but you instead choose to take the life of the store owner, you'd have made the situation arguably worse. With nothing to go off of but the extremely vague premise, I'd have to weigh the probability of the possible outcome not being in my favor.
The way I see it, the other side of the argument is, is killing always wrong? Well if you see someone about to kill someone else, if you are choosing to commit the very same act which you condemn. So to say you're killing them out of principle is mere hypocrisy. So I say, no. Absolutely, do not kill the person unless it was a fucking murderer, about to kill an innocent person.
The way I see it, the other side of the argument is, is killing always wrong? Well if you see someone about to kill someone else, if you are choosing to commit the very same act which you condemn. So to say you're killing them out of principle is mere hypocrisy. So I say, no. Absolutely, do not kill the person unless it was a fucking murderer, about to kill an innocent person.
