Well look at it this way, the guy that got shot indirectly killed thousands and made a lot more peoples lives miserable through needless suffering and financial ruin, the guy who shot him killed one, in an attempt to stop the indirect killing. The first reaction of the company the guy that got shot worked for was to allow compensation for medical claims more easily ("rectified" since, but a bunch of people got essential help early in) therefore the shooter saved a lot more people than he killed. So why would anyone not glorify the killing as it was a net win.