[mollynme]

From the Rocky Mountain News

It was the utter innocence of a children's pizza place called Chuck E. Cheese that made the multiple murders there so shocking in 1993.
It was the neighborhood hangout in a safe section of suburban Aurora, a spot where the noise typically came from rambunctious kids squealing in delight - not from dying teens crying in pain.
Someone gunned down all five people who were closing the restaurant on Dec. 14, 1993, in a city that was preparing for Christmas. Most of the victims were young people working after-school jobs. The crime shocked a community of caring people.

[I_dmc]

to clarify: I meant whatever led to the crime, that led to a death penalty, was "overreaction", thinking of someone's seriously disturbed reaction to an imagined slight. Article doesn't indicate why Nathan Dunlap committed such a heinous crime.