The contemporary cultural trends that introduce regulations weakening parental rights have also come to Poland. Under the influence of utilitarian-statist ideology, which sees the state and its officials as the primary educators and guardians of children, powers naturally enjoyed by parents are being questioned under various pretexts. One of these is the use of violence against children. Due to actions taken by the state towards family, institutional violence used by the state – which is often much more severe for children – often becomes a remedy for parental violence. This text attempts to solve the problem by referring to the basic Kantian distinction between justified and unjustified violence, and to the priority of family and parental rights over the powers of the state. In the same way that the state can use violence towards citizens, so parents can use violence towards their children, as long as its scope and form stems from what is most important for the parental relationship: the categorical imperative of responsible love, aimed at encouraging a child on his or her way of growing up into responsible freedom. A symbol of such parental action is the act of spanking, which – when properly understood and properly used – is sometimes a moral duty of parents.