A concise French-language political study examining how modern democratic societies may experience forms of domination that are subtle, institutional, and normalized rather than overtly coercive. Through the idea of a tranquil totalitarianism, André Bellon explores the tension between democratic ideals and practices that can restrict genuine participation, accountability, and public debate. The title suggests a critique of power structures that appear routine or consensual while gradually narrowing the space available for collective decision-making. The work is best understood as a short political essay aimed at readers interested in the fragility of democratic institutions, the concentration of authority, and the ways civic life can be shaped by invisible or accepted mechanisms of control. Its brevity points to a direct, polemical approach rather than an extensive historical survey.