Leah Hunt-Hendrix and Astra Taylor talk to Rob about their recently released book, Solidarity: The Past, Present, and Future of a World-Changing Idea. The wide-ranging conversation covers the importance of solidarity in addressing the current crises of economic inequality, climate change, and democracy, emphasizing the need for collective action and social movements to bring about change, as well as the role of education and the arts in fostering a sense of community and shared identity.