That will go a long way in making these nuts think twice before taking innocents down with them.
People who are "Nuts" are not exactly renown for their rational thinking. For example, what's the use in being famous, only after having killed oneself? Can't really use that fame for anything can you? 
People who do this kind of thing are cowards. They know that they can get away with doing anything they want past the point of turning back. If it starts to go South on them, they have the comfort that they can just pull the trigger on themself - no pain, no punishment, no long term consequences. The only thing that can scare them at that point is the fear of having to live, face MORE pain, and deal with what they did that they thought they were going to get away with.
I'm no psychology expert, but I get the feeling that, for instance, if the Columbine kids were stopped, overran, beaten within an inch of their lives and now in federal ass-pounding prison, we wouldn't have near as many dumbasses "going for the record".