Excerpt from the year 2017 in the subject Politics - Basics and General, grade: 1,0, University of Applied Sciences for Public Administration of North Rhine-Westphalia; Munster, language: English, abstract: This excerpt is based on the article 'Gangs, Migration, and Crime: The Changing Landscape in Europe and the USA' by Scott H. Decker, Frank van Gemert, and David C. Pyrooz, taken from the Journal of International Migration and Integration (2009) 10:393-408. First, a brief summary of the article as well as core information on the authors and the context of research in which the article falls will be provided. A discussion on the intention of the authors follows and different theories about how gangs form (and change) are presented and examined. Based on the research and conclusions highlighted in the article, one can further interpret the results from a comparative point of view, for example with respect to Germany, also commenting on the difficulty of conducting cross-national and cross-cultural research. The question will be: Are there gangs in Germany in the sense of the definition that the article follows?