What feature of social movements in the early 19th century can you call defining?

Based on the assertion of Karl Marx, the defining feature of social movements in the early nineteenth century is the general movement towards republicanism, defined by the striking example of the French Revolution. The main feature is anarchism, nihilism and complete distrust of the state – power to the people, and the land to the peasants. The twentieth century showed the fallacy of these opinions, so that the war between the bourgeoisie and the proletariat was, to put it mildly, a redistribution of power and the replacement of centuries-old rules and traditions.