The Momentum model is a synthesis of best practices from diverse sources including: research from the field of civil resistance, social movement theory, labor and community organizing, organic systems theory, and the long history of socialist strategy as well as through on-the-ground experimentation within our own community of practice. Momentum sees itself as descendants and students of social movements from around the world, such as the anti-apartheid movement in South Africa, the Civil Rights movement in the US, the Color Revolutions in Eastern Europe, and decolonization efforts throughout the Global South. Momentum trains and supports organizers in a living model to build social movements that change public opinion and institutionalize wins on the most pressing justice issues of our time. This living model contains foundational frameworks and practices as well as core tools to deploy based on a particular movement context.