Despite the recent development of a broad literature on urbanization in nineteenth- and twentieth-century Latin America, the topics of public order and crime have eluded careful study.1 The historiography of Argentine urbanization evokes questions about social control, but we know little more about changing patterns of crime and policing than did contemporary observers. Immigration, labor organization, class struggle, and political violence have all been the subjects of scholarly inquiries that suggest both high levels of disorder and the necessity of official responses.2