Bummer, dude. Usually these types of things turn out to be just stupid kids, and not any actual threat.
SD
We had a similar incident here in li'l ol' Des Moines a year or so ago and that is what it turned out to be.
Probably. Although Appleton is not only the national headquarters of the John Birch Society (and the hometown of Joe McCarthy, BTW), not that far from here is where the Posse Comitatus (Lyndon LaRouche's group) had a "compound". This is a safe, tolerant area, but I'm not going to kid myself that its completely free of anti-semitism. Even if just of the idiotic, ignorant variety.