Can two wrongs ever make a right?

[paulpablo]

"Two wrongs make a right" is a fallacy of relevance, in which an allegation of wrongdoing is countered with a similar allegation. Its antithesis, "two wrongs don't make a right", is a proverb used to rebuke or renounce wrongful conduct as a response to another's transgression.

Can two wrongs ever make a right? The underlying question is whether it is moral to sacrifice morals for the greater good.
Killing terrorists can be said as an example. You're countering a wrong with another wrong which results in a right.

Is it moral? You could consider any act that results in a positive outcome as an act that could be considered moral. However, this leads to a slippery slope where systematically killing humans to control overpopulation becomes a moral act. 


Thoughts?

By definition two wrongs can't make a right because they're both wrong.

Say if a terrorist is in armed conflict with the police, it's right that his head gets blasted off his shoulders.  So that's not two wrongs making a right, that's one right stopping a wrong by reasonable use of force.

But then obviously there's subjective opinion about what is wrong and right.  But if something is seen as wrong then doubling up on that wrong action with similar wrong actions will obviously remain subjectively wrong.

As for human population problems, I think abortion and birth control are acceptable, the only debate in my mind is how they're paid for.
I've heard some arguments about the American planned parenthood being founded by a woman who believed in eugenics and it's basically a method of reducing the black population in disguise of a liberal charitable organization.
That's just an argument I've heard though, I really don't have much opinion on the finance of birth control or planned parenthood.  I can afford abortion and birthcontrol if I want it, I don't know how much tax is being used to pay for other people's abortions and birth control but it might be worth it in the long run.

^
Just realized this last part is a bit off topic possibly. But to cut a long story short, I think it's true that most things are subjectively right or wrong despite the strong opinions I sometimes have about what is right or wrong.