This is, word for word and in its entirety, the text on a poster that has been displayed in a public school in our area for years:

Violence is Any;
Word
Look
Sign
Act
 that inflicts or threatens to inflict physical or emotional injury or discomfort upon another person's body, feelings, or possessions.

Can anyone make sense of that statement?  Adopting it as policy would be quite another matter:  "Ms. Dimbulb, Johnny gave my pencil a dirty look..."

Send the kid in for anger management counseling.  That'll get him to respect you, I'm sure.

I would point out that approximately 100% of a public school's budget comes as a result of threatening tax payers with acts of violence, but saying that might inflict emotional discomfort and thereby constitute an act of violence.