Safety in public spaces has become an issue of increased concern and attention in India, after incidents of sexual harassment and violence against women. The need for safe public spaces was formulated in the civil society in New Delhi and can be described as a social movement. Mobilization and mechanisms behind is studied in a theory-based analysis to learn more about social movements. Results can be of general importance in understanding the role social movements may play in work for safe public environments, not only in New Delhi, but elsewhere as well. The purpose of the thesis is to i) describe the work by social movement on safe public spaces among three central actors within the movement and ii) analyze the movement´s success in its mobilizing efforts and highlight mechanisms of importance. The study is a qualitative case study in New Delhi. The empiric material was collected through a document study and semi-structured interviews. Frame theory was used in study design and data analysis. The analysis showed common problems perceived by the actors as overall fear, patriarchy and urbanization, while working methods and solutions differed. The main difference was a result of digitalization and activities on social media in a cycle of protest. Motivational frames portrayed vulnerabilities, challenges and opportunities for women getting attention and motivated to engage. It has resulted in a diverse movement, shaping new ways to reach out taking advantage of new technology.