This book focuses on the collective trauma created by the constant and implacable interpersonal violence in Arquitecto Tucci, a marginalized neighborhood in the outskirts of the city of Buenos Aires, Argentina. It examines the hows and whys of the copresence and concatenations of different forms of violence that encircle the lives of the urban poor in the community. It considers the ways in which scared residents—men and women, adults and children—establish routines and weave relations to cope with (and respond to) the constant danger that besieges them and their beloved ones by exercising what anthropologists Veena Das and Michael Lambek call “ordinary ethics.” This introduction provides an overview of violence in urban areas in Latin America, the book's ethnographic reconstruction of violence at the urban margins, the research method used, and the chapters that follow.