Interest-based groups are organizations formed by individuals who share common interests, goals, or concerns. These groups can focus on a wide range of topics, such as environmental protection, education reform, or healthcare access. Members collaborate to advocate for their shared interests, often influencing public policy or raising awareness about specific issues. These groups can vary in size and structure, from local community organizations to large national associations. They often engage in activities like organizing events, conducting research, and lobbying government officials. By uniting individuals with similar passions, interest-based groups can amplify their voices and create meaningful change in society.