Yeah see I don't see teachers as authority figures, I see them as educators.
Whatever the rules (sounds pretty militant to have a no touching rule that is applied when kids are simply hugging!!) I think she was very wrong in the way she handled it. Her tone, the way she said and enforced it, would put any parent off!
id like to think that as a parent, I am involved in DS's schooling and not treated like a child myself or be spoken down to by teachers thinking they have more authority than me. I'd like to think I am a participant in being an authority in my child's school experience.
I can see why you're so put off OP!