What about solidarity in the age of individualism and the crisis of social ties? What are the new forms of solidarity today, how do they assert themselves, and through what channels? But above all, against what forces must they assert themselves? In a society in which responsibility still seems to be valid only when the positioning of the individual on the job market is at stake, therefore a self-referential responsibility, while it has completely disappeared from the radar of the elite (“noblesse n’oblige plus”), questioning ourselves about solidarity means questioning ourselves about our relationship with ourselves, with others, and with the planet and its resources. And, before that, on the form that powers take today.