The 40-year-old man who killed six people at a Sikh temple in Wisconsin Sunday was part of a fringe subculture of musicians who use the aggression of heavy metal as a means to attract new members into the white supremacist movement.

Wade Michael Page, the man identified as the shooter, was a member of the neo-Nazi band End Apathy and Definite Hate. On the band’s MySpace page, it states that End Apathy’s music is “a sad commentary on our sick society and the problems that prevent true progress.”