The nutbar was angry because they overcharged him for a lawnmower engine repair, as I recall. About five people killed over a lawnmower repair bill...
Including the shop owner and his wife. The son was sick or late or something. Today he owns the business and mentioned his lucky escape in the article a few months ago. But he lost his parents. There is certainly something to be said about being armed on the job. Too bad they won't allow armed teachers.
There is a gang war brewing at my school. Guns and knives in and out every day. I personally wouldn't be surprised if our principal had a cut of the action on drugs, since he invited all the thugs and gang members who were expelled back into school.