Sexual Abuse and Institutions

When the scandal about Catholic priests in Boston abusing children burst onto the front page all over America, an outrage against certain institutions began fomenting. Immersed in the world of the psyche, I have wondered about how institutions, unwittingly, provide opportunities for predators, and even indirectly promote predation within their own ranks. I also wonder about the predator. Do they enter institutions with the aim of using them to provide access to victims? Or is there a mysterious systemic complicity that induces or releases predatory behavior within the stated mission of the institution, whether religious worship, education, sports training, artistic enterprise, or summer camp?