Associate Professor of Social and Economic Science of Kharkiv National University of Internal Affairs Andrii Diadin along with Associate Professor of Social and Economic Disciplines of the Faculty of Training Specialists for Criminal Police Units of Odessa State University of Internal Affairs Vladyslav Varynskyii conducted binary classes with second year cadets of Odessa State University of Internal Affairs in the discipline “Sociology” on “Sociology of ethno-social and national relations” (http://univd.edu.ua/uk/news/11572).