The fact you said something about “the end justifies the means” in your response tells me you understood where I was comin from. Yes these folks are a blithe on society but all I could picture is someone on the other end of the phone enticing this guy into committing... where other wise he may have just sat back in hiding and never do anything in fear of, as you said above, being exposed etc etc... like in the old days.
im any event sorry to hear you had some bad times...
Whatever "they" did, he is the one who made the choice. Fortunately for some young children, he chose the wrong target.