A famous serial killer, Ted Bundy, blames addiction to inappropriate material on his actions:
In the Dobson interview before his execution, Bundy said that violent inappropriate material played a major role in his immoral crimes. According to Bundy, as a young boy he found outside the home again, in the local grocery store, in a local drug store, the inappropriate material… And from time to time he would come across even more inappropriate books…. Bundy said, "It happened in stages, gradually. My experience with inappropriate material generally, but particularly with inappropriate material that deals with violent immorality, is that once you become addicted to it, and I look at this as a kind of addiction, you look for more potent, more explicit, more graphic kinds of material. Like an addiction, you keep craving something which is harder and gives you a greater sense of excitement, until you reach the point where the pornography only goes so far – that jumping off point where you begin to think maybe actually doing it will give you that which is just beyond reading about it and looking at it.
This is what Arthur Gary Bishop, another serial killer that killed five boys and was sentenced to death, wrote after his conviction:
Inappropriate material was a determining factor in my downfall. Certain bookstores offered graphic and explicit inapproriate materials. I purchased such books and used them to enhance my acting out fantasies… Finding and procuring lust materials became an obsession. For me, seeing inapproprite materials was lighting a fuse on a stick of dynamite. I became obsessed with immoral relationships. I became stimulated and had to gratify my urges. My conscience was desensitized and my appetite for lust entirely controlled my actions.