2) Wiccans are generally very nice people, if you're playing nice...
3) That Wiccan on TV is a sad portrayal of the Craft and does little to relieve interreligious tensions.
Wiccans are not evil, and generally do not do 'bad' magic, they follow the rule of three (Belief that what ever you do comes back to you three times as bad or good depending on what it was you did).
In some respects Wicca is a old religion, as it is the revival of religions that perished when Christianity was spread like a plague through out europe, but wicca as we know it now didn't show up until the nineteen-hundreds.
"Bide the Wiccan Law ye must,
In perfect love and perfect trust.
Eight words the Wiccan Rede fulfill"
An'ye harm none, do what ye will.
What ye send forth comes back to thee
so ever mind the law of three.
Follow this with mind and heart,
Merry ye meet, and merry ye part.
My heart and prayers to all those who are ignorant of this beautiful religion.
Um, Wiccans don't use magic for evil.
Oh... It must have been something I ate then.
Sorry, we aren't like that, you should research.
Most Wiccans know very little about their religion. They are attracted to it because it claims to be peaceful, yet they are unaware that it's largely based on ancient Celtic religions that used to burn people alive as sacrifices. They also lack the logic to see that a billion different religions can't all be true, so it makes very little sense to borrow from a ton of them.
The Wicca religious population is made up mostly of fat women and angsty teenagers with semi-goth style and a longing for attention. Many like to go to school wearing their ceremonial robes, which are actually strictly made for formal occasions according to Wiccans who actually know stuff. They thrive on people looking at them funny, so they can chuckle to themselves about how ignorant they are or go and yell at them for being "narrow minded bigots." They're also ridiculously politically correct about themselves and will get extremely offended by just about anything (like Halloween), but won't hesitate to insult other religions like Christianity or Judaism.
In short, Wicca is a stupid fad which should die out soon enough.
"Oh, that's just Margaret the Wiccan."
Is someone who worships Nature for salvation practicing white magic, medicinal healing, and Spiritualism. Wiccan theology can be vast, but many are either Duotheists, Pantheists, or soft Polytheists. The belief in an afterlife depends on the individual, but many believe that through positive reincarnation you'll be granted a heaven called the "summerland" (better existence on earth or another world), and through bad reincarnation a hell (lesser existence on earth). The Rede is: An'ye harm none, do what ye will.
The path was developed around the late 1950's by Gerald Gardner: a British anthropologist & Freemason who was also some big buff on Aleister Crowley.