Nossas is a Brazilian non-profit, system of civic mobilization infrastructure and a laboratory of activism. It creates innovative technological platforms, campaigns and mobilizations that deploy different mass communication channels, tactics and a mix of online and offline organizing to both change public policy and attract new, ever-expanding constituencies to the field of activism and citizen engagement. Nossas’s mission is to foster engagement advocating for just, sustainable communities. Its projects are present in 20 cities in Brazil, Colombia, Argentina and Mexico. It has changed or shaped over 200 public policies through the direct participation of over 1.2 million people.