I've known a few adherents to what is known as Wicca (they seem to gravitate to areas such as Cornwall). They can be summed up as well-meaning, slightly eccentric people with a possibly misguided faith in natural medicines and herbs and a general desire to live with, as opposed to against nature. No broomsticks, no curses and certainly no devil-worship. As far as I know no Wiccans have ever blown themselves up in a crowd or led a crusade to the Holy Lands against unbelievers. Nor are they known for buggering young boys in their care.
If this is delusional rubbish, I'm all for it.