A court in Quebec has overturned a decision by a father to ban his daughter from attending a school trip: http://www.cbc.ca/canada/story/2008/06/19/father-court.html. The daughter was living with her father and stepmother, and had a fight with the step-mom. The father then banned the daughter from attending the trip, so she stomped out and moved in with her mother, and several days later, a petition was filed to overturn the father's punishment. Stunningly, a judge agreed with the girl.
How is a judge sticking her nose into a legitimate disciplining of a child anything other than an example of the state interfering with familial relations?