Lady Zombie - It is not my intention to highjack your thread, and I mean no disrespect, but I have to say that the word symposium really caught my eye. For me, a true symposium consists of discussion among the participants. It consists of reasoned and rational debate. In a true symposium, the audience members are participant-observers, with an emphasis on the word participant. In a true symposium, the audience members all observe and participate. There is a mutual exchange of ideas and perspectives.
For example, in the situation where the "brother" was viewing "pornography," someone could ask if pornography is distinct from erotica. If so, what is the difference?
In the case of the kid ratting out informing the elders of the transgression on the part of his friend, someone could inquire as to the virtue of loyalty. A person might bring out the idea that the elders do not necessarily have to become involved in every single matter. Someone could also mention that, throughout history, the Nazis and other brutal, totalitarian authorites used similar techniques to control the populations that were under their rule. One big negative consequence of such a tactic was that it created a general sense of paranoia in society, the end result being disastrous.
To be brief, these are complex situations.