Here's something that almost all the mass killers of the last fifteen years or so have in common: they've been called "nerds." James Holmes, who allegedly murdered 12 people in a crowded Colorado movie theater on Friday morning, was described as a "nerd" by his uncle within hours of the shooting. Norwegian mass murderer Anders Behring Breivik is, in the Telegraph, a "puffy-faced computer game nerd." Columbine killers Eric Harris and Dylan Klebold were "innocuous nerds," the Los Angeles Times claimed in 1999.

The 1999 edition of Rebelations, the yearbook for Columbine High, is fetching bids right now on an online memorabilia auction site. Yes, you can own the yearbook that features murderers and their victims for $500. [Update: The item has been withdrawn. See below.]