The common law defence of reasonable and moderate parental chastisement is unconstitutional because: (1) Any corporal punishment, however moderate, constitutes "violence" within the meaning of section 12(1)(c) of the Constitution, which protects everyone including children from "all forms of violence from either public or private sources"; (2) Chastisement involves the intentional application of force to cause pain, which meets the definition of assault and therefore violence; (3) Such chastisement impairs children's dignity contrary to section 10; (4) The limitation of these rights cannot be justified under section 36 because there is insufficient evidence that corporal punishment benefits children, less restrictive disciplinary means (positive parenting) are available, and children's best interests under section 28(2) are paramount; (5) The best interests of the child require discipline methods that advance well-being without violence or undue harm to fundamental rights. An amicus curiae may be granted standing to intervene as a party on appeal in the public interest where no original party will challenge a decision, the matter affects a broad public, and the issues raised warrant authoritative determination by the apex court.