Some of the other categories are structural violence, symbolic violence, and violence enacted by the government through laws or actions. Structural violence occurs when the structure of a society causes the violence. Examples of this include laws that create unequal access to public amenities or affect different citizens based on their status in society. Symbolic violence concerns socially accepted norms that are ingrained over time such as the roles of different classes, genders and ethnic groups. Finally political violence addresses the harm the government can inflict by their actions either through neglect or action. All of these forms of violence can also be characterized in urbicide.