It's grimly amusing the way that bands who base their image on murder and death and fear and misery suddenly start backtracking when they suddenly get linked to actual murder and death. It happened with Marilyn Manson over Columbine; now, Slipknot are desperately trying to disassociate themselves from a murder in South Africa where the lad who stabbed four people with a sword while wearing a "Slipknot" mask:
Declining to provide her name, the woman at Roadrunner Records said: “We’ve had no confirmation that it was, in fact, a Slipknot mask. The band is not going to respond.”
It's odd that they have so much to say about mayhem normally, but come over queasy when it's suddenly all real.
It's too simplistic to 'blame' music for people's behaviour, but if you don't want to find yourself being asked awkward questions about stabbings, perhaps you shouldn't dress up a serial killers and throw entrails about in the first place? If you're serious about shining a light into the darkest areas of the human psyche, why do you squeal and go into hiding when it gets reflected back?