Down with the sickness

Yes, I have introduced my son to Rocky Horror Picture Show, and even though I only go every few months, it's fun to see that it is still tthe home for theater geeks, nerds and the like. My son, before he went, hit a few websites, since he knew nothign about it, and saw that it was being discussed by a bunch of people as "homosexual recruiting" and worshipping Satan and such. Why is it that religious leaderts tend to go after geeks and nerds instead of true evil? Is it because organized religious is evil and needs to pass the buck?

I have a constant discussion with a religious person I work with who calls D&D "Satanic". How can I explain to him that a bunch of pasty geek in a basement rolling dice isn't SATANIC so much as just dorky?