sentences:  Urban violence, common to many other Latin American cities with the same social roots and political conflicts, is the central theme of the novel.In Colombia, violence has been historically associated with the countryside, but during the second part of the 20th century it came to the cities due to the growth of drug cartels, which imposed their rules of violence and corruption.Medellín, the old industrialist center, became the main headquarter of the powerful mafia cartel of Pablo Escobar.