Street harassment is a gender-based injustice experienced in public spaces. In this research, I draw on feminist perspectives and explore the stages of social movements to study how social media platform Twitter is used to share and process experiences with street harassment, pass along resources and media about street harassment, and to engage in anti-street harassment organizing and movement building activities. I detail a qualitative approach to social media research, introduce the concept of listening in Twitter-based research, and conclude with ideas for future research.