If the claim was that it would then you have a point, but that has never been claimed. The reason they don't is only partly to discourage repeat offenders. The larger reason is so that they don't give some jackass the 5 seconds of fame he's trying to earn by being an *******. In other words - to not dignify being a jerk. Which is precisely the point. We do, intended or not, dignify the act. Columbine is the ultimate example - it spawns copycats, it has made those two murderers into cultural icons (negative icons, but icons nonetheless), and there was ZERO substantive, practical results out of the process that dignified them. I call that stupid and unethical.