This article explores the processes of politicization of care brought about by mutual aid initiatives that emerged in working-class neighborhoods during the Covid-19 crisis. The concept of “care coalition” is used to designate the networking of agents who provide care in vulnerable urban communities in a situation of emergency. The health crisis provides these coalitions with the opportunity to advocate for a revaluation and redistribution of care among political authorities, both through direct confrontation with institutions, and by making care visible in the press and on social media. Such politicization “from below” questions the articulation between private initiatives and public policies, and opens up avenues for a right to the city that takes into account care-related dimensions.