How does solidarity emerge? When are political alliances formed beyond differences, and why do certain political movements receive more solidarity than others? What makes up solidarity work and what contradictions, interests and strategies shape it? In their new volume Hierarchies of Solidarity, Sinthujan Varatharajah and Moshtari Hilal jointly reflect on a practice that, as an act against oppression, expresses itself in both seemingly small everyday gestures and global political contexts. The result is a revealing conversation that, underpinned by lived experience, traces the racist structures of the discourse landscape and offers alternative ways of understanding solidarity.