Grassroots activism involves mobilizing individuals at the community level to advocate for social, political, or environmental changes. These movements typically arise from the community's needs and focus on local issues, often relying on volunteer efforts and community engagement. Grassroots activism is characterized by bottom-up approaches, where individuals unite to enact change rather than relying solely on traditional political structures. By building coalitions, raising awareness, and advocating for specific policies, grassroots activists play a vital role in challenging established power dynamics and effecting meaningful reform.