The defining characteristics of a public policy are that it must affect many people, be accepted as legitimate, and:

It must affect many people, be accepted as legitimate, and "be created through a political process".

Public policy is the way a legislature keeps up order or addresses the requirements of its nationals and can be found for various segments, for example, health and law & order. Public policy is continually changing as the requirements of a general public change. These can be changed by residents through verbal confrontations and votes.