The first steps to understanding Columbine, they say, are to forget the popular narrative about the jocks, Goths, and Trenchcoat Mafia—click here to read more about Columbine's myths—and to abandon the core idea that Columbine was simply a school shooting. We can't understand why they did it until we understand what they were doing.

It goes on to say that they were not actually members of the "Trenchcoat Mafia". They were also not fans of Marilyn Manson. Urban legends die hard, though.