In the context of 1848, the concept of public space undergoes a significant transforma¬tion. From being an arena of criticism independent of the state, it becomes an official site of political and social expression thanks to political openness and the creation of formal institutions. Workers’ associations play a central role in this new public space, promoting political and social ideas. Ideological distinctions emerge between moderate republicans and radical republicans, further defining this space. The transformation reflects an incre¬ase in participation and a substantial evolution in the dynamics through which society expresses itself and interacts with power.