Now, when the term working class is used in Hungary by radical leftist circles only, this study is especially important, which gives an enjoyable review of the history of the working class in the 20th century as well as on its intellectual tradition, movements and world shaping revolutions, of course including the contradictory but in many respects positive revolutions in Russia and China. The author examines the reasons behind the defeat of the workers' movements, and sees the future of the left in crossing its Europe centrism in a world where consumption and growing middle classes have already crossed the national borders.