Governments, landlords, employers, and other powerful actors use artificial intelligence (AI), algorithms, and related technologies to make decisions about how low-income people work, live, learn, and survive. When people are hurt by AI decision-making, they have few places to turn. TechTonic Justice exists to change this. TechTonic Justice fights the ground-level harms AI causes low-income communities. We do this mainly by supporting local justice movements--legal aid organizations, frontline service providers, grassroots organizers, and affected communities--to identify and fight harmful uses of AI. We emphasize a multidimensional advocacy approach that blends litigation, community activation and organizing, public education, and narrative advocacy. We are based in Los Angeles and offer our services nationwide, with emphasis on the South and the West Coast.