Why do you think the euros are the only ones who would do this? I remember reading of at least one case in which an American public school demanded that a teacher not wear a cross that was visible around her neck. Do you think most teachers in American public school feel "safe" enough to wear crosses or stars of David as jewelry?
"Do you think most teachers in American public school feel "safe" enough to wear crosses or stars of David as jewelry?"
They might applaud crescents or inverted pentagrams.