What I believe Prof is talking about are groups which will locate and expose these creeps so that all in the neighbourhood in which these creeps live are fully aware of the address, the crimes, the whole shebang. No violence, I would not support that, just awareness for the neighbourhood. I have mixed feelings on this, I think it is great for all to be aware, but as a parent I am just as worried about those who haven't been caught yet and feel this kind of "program" creates a false sense of security for parents. But we all ought to be aware of who is living across the road from the elementary school or the neighbourhood swimming pool.