This review is an analysis of the monograph of Roman Osin, candidate of philosophy, associate Professor of the Department of fundamental legal and social-humanitarian disciplines at synergy University "Left forces and spontaneous protest: history, lessons, modernity, prospects". The monograph examines the political and socio-class nature of the mass protests of 2011-2013 from the perspective of Marxist methodology and tactics of the Russian left movement in them. The monograph is of interest both from the point of view of studying the protest and left-wing movements of the early 2010s, and from the point of view of the methodology for understanding the phenomenon of "color" revolutions in General. The author analyzes the social composition of the protesters, their political views, as well as the political forces of the protest and their tactics based on the empirical material of sociological research, as well as personal experience of participating in the ongoing processes. Based on the study, R.S. Osin concludes that the protest was generally "petty-bourgeois" in nature and could not lead to fundamental changes in the basis of society. At the same time, from the author's point of view, this protest was an important milestone in the development of the politicization of Russian society and could not fail to be a useful experience for Russian citizens. Analyzing the tactics of the left forces, R.S. Osin notes as a disadvantage the political and ideological inconsistency of many left-wing organizations, which benefited the liberal protest forces or the authorities. From the point of view Of R.S. Osin, the most correct tactic was the tactics of those organizations that simultaneously opposed the liberal and state-Patriotic forces, which in practice means participating in protests with their own independent agenda. In conclusion, R.S. Osin expresses his own point of view on the need for fundamental changes in society, reveals the concept of social and political revolutions, and also States the thesis that only the organized labor movement and other layers of workers can change the system of industrial relations in the country. Despite the obvious ideological color of the work and the use of exclusively Marxist methodology as the research base, R.S. Osin's monograph is of scientific interest and can be used to study the modern protest and left-wing movement.