Violence in America: A Public Health Emergency

Abstract
Violence, according to one dictionary, is defined as "(1) exertion of any physical force so as to injure or abuse, (2) injury by or as if by distortion, infringement, or profanation, (3) intense, turbulent and often destructive action, or force." In his bookPowershiftAlvin Toffler identifies violence or the threat of violence as one of the three fundamental sources of all human power, the other two being money and knowledge. Toffler convincingly argues that these power sources influence every person and all groups including government. Of the three, violence is the lowest form of power because it can only be used to punish. Knowledge and money are far more versatile and can be used in an infinite variety of positive as well as negative or manipulative ways.1The violence referred to in this issue ofJAMAis the interpersonal kind rather than such types as war or that

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