The War on Spam

I am wondering: how many gruesome murders of spammers would it take to significantly reduce spam? I mean, if spammers' bodies started to turn up, obviously tortured to death and with a note attached saying that the person was executed for being a spammer, and some proof of the fact that the person really was a spammer.

No, I don't really recommend this a method of reducing spam, both for humanitarian and financial reasons. (Although would probably be at least somewhat amused if that actually happened to some spammer.) I am just curious in theory: what would the graph of the volume of spam as a function of the number of murdered spammers look like? I am sure it would also be a function of the location of the murders, but for the sake of the experiment (the gedanken experiment, mind you, don't stage actual experiments at home) let's assume that murders are evenly distributed with regard to the number of spammers in each location - say, every metropolitan area has an equal percentage of spammers murdered.