Fighting as an act of denigration is one of the activities that d-evolves humanity into animals. Sometimes fight to survive is justified, just in order to protect our life, and people who care. Therefore, violence can be justified just by the circumstances. So the possible way is to create an environment that anyone can enjoy. For this reason, to fight sets a controversy whether it is valid, or invalid. In one hand, fighting is a valid situation when follows norms. When the environment is appropriate, to fight can be justified as a show, even enjoyment. One example is boxing because violent acts follow rules which pretend not to hurt people, but to preserve health from participants. Another example is rugby where there is a phrase “Football