THE ENDS JUSTIFY THE MEANS???

I need to be clear when I say that I believe our intelligence agencies should have a wide berth when it comes to national security.  But, one of the arguments I've heard from numerous sources regarding the release of the C.I.A. report is that without our line of questioning, represented to be illegal, we would not have gotten Bin  Laden.  

Now, that line of thinking is more dangerous than the C.I.A. report, because it says we have the right to ignore the law if we get good results; the ends justify the means.  

So, why have laws at all?  That line of thinking leads to anarchy.  And we're to blame if we tolerate it.