I'm with Burg. I think people who devour true crime material or spend hours in front of 'real CSI' shows are a hammer waiting to drop.

That visceral fascination with the destruction of life seems to me to be far more harmful than video footage of a girl being throatfucked.

And we could further discuss the way purveyors of 'true crime' materials juxtapose images of death with images of nudity, but I think Luke now realizes that he has a problem and should consult a psychiatric professional before his pathology takes real hold and pushes him to murder someone instead of just their image with his camera.