Collective identity shapes social movements by fostering a sense of shared belonging and purpose among participants. This identity emerges from common experiences, struggles, and values, leading to collective action aimed at achieving specific social or political goals. When individuals identify with a group, they are more likely to mobilize and participate in initiatives that promote solidarity and advocate for change. This shared identity not only unifies members but also amplifies their voice in the public sphere, influencing perceptions, policies, and social norms surrounding their causes.