Excerpt:Â On July 25, I asked in a column entitled, "Porn triggers acting out on victims? Really?" why the Federal Bureau of Prisons spiked its own sex-offender study at Butner prison in North Carolina.The Butner study, as it turns out (newsflash!), found that criminal sex offenders tend to hide the extent of their crimes. Moreover, although of 155 men arrested "just" for child pornography 40 (26 percent) admitted to being child molesters, it turns out that later, 132 men (85 percent) confessed to sexually abusing children â€“ admitting to 1,777 young victims.