How can we defeat fascism? By building something better. For all its present incoherence and fragmentation, the left still possesses the tools to construct an ecosocialist future. It is time to use them. Drawing on a sweeping analysis of the last 30 years of social struggle, and his direct on-the-ground experience of building a solidarity economy in Cooperation Jackson, Mississippi, Kali Akuno lays out a road map for not only resisting and surviving, but eventually mounting a serious ecosocialist challenge to the ruling order. Arguing that we can only aggregate power through a coherent strategy of transformation, Build and Fight combines principles of mutual aid, worker self-organization, food sovereignty, popular democracy and self-defense with offensive strategies of the general strike, dual power, and Land Back. Pragmatic and invigorating, the book shows how a new society rooted in restorative justice, human rights and ecological sustainability could be born.