My guess is two out of three following that the shooter is:
Politics -Liberal democrat, possibly associated with some fringe environmental (ELF) and/or Socialist Move-on/Occupy movement. Wealthy liberal parents.
Mental state-Psychotropic prescription drugs for ADD, depression or psychotic diagnosis.
Spiritual-Intense interests with occult, video games, grunge. Not a church going type. Maybe even occult follower
Probably pretty close. I haven’t read any updates.