I've heard a story of a kid (I think he was 12) from a Wiccan family in Texas who was jumped by a group of people because he was wearing a pentacle necklace. If I remember right they stabbed him, and I think they might have burned him also, but it's been a while since I heard the story. A group of people, possibly adults, killed a 12 year old because of a necklace. I'm not sure as to the truth of this story, as it was told by a guy who called in to a podcast I listen to (The Thinking Atheist, a guy who lives in Tulsa). Honestly, I wouldn't be at all surprised if it was true, and that fact is quite disturbing.
While I was on vacation in Texas last year I wore my pentacle necklace the whole time (albeit under my shirt), though I also carried my pocket knife at all times as well.