I associate Metal with grungy OWS loons, not smart conservatives like yourself. Please just read the book. If after that you still want Metal, go for it.
Strong generalization of who listens to metal music. I know numerous conservatives who listen to Metallica (one of my favorite groups). Heck, a 60+ year old women at my old church played Metallica's "Fade to Black" on her accoustic guitar during a Bible Study.