This article appraises the political writings of three Polish Marxists from the early 20th century, Kazimierz Kelles-Krauz, Stanisław Brzozowski and Rosa Luxemburg. In the specific peripheral conditions and because of the entanglement of different struggles in the Polish Kingdom under Tsarist rule around the 1905 Revolution, it was no longer possible for Marxists and political theorists to refer to any firm political ground: whether the organic unity of the nation, class antagonisms, or laws of history. The construction of revolutionary subjects (...) in Luxemburg, the political rethinking of national community and the realistic ‘agonistic’ conception of democracy in Kelles-Krauz, and Brzozowski’s anti-essentialist Marxism, with its mobilizing power and politically constructed subjects of social change, are peculiar, peripheral forms of political Marxism, today worth looking at one more time. (shrink)