A very valid question here, because ordinarily that type of person may seem quite civilized.
A bit of a liberty by me but here is an imaginary scene at a happier and more tolerant time.
Teacher: (With kind smile)
I know you will understand about this, but a new policy is to be followed. What I am going to do, is to take your candy canes and lock them up in my desk. When you go home you can take them with you. Tell your parents what I have said about the new policy. If they wish, they can remove the messages and you can bring the candy cans to school for your friends.
She then carries on with the class activities.
.....and you can bring back the candy canes for your friends.