Interest groups are organizations formed by individuals who share common goals and interests. They aim to influence public policy and decision-making by advocating for specific issues, such as environmental protection, education reform, or healthcare. These groups often engage in activities like lobbying, public campaigns, and research to promote their causes. Members of interest groups may include citizens, professionals, or businesses who contribute time, money, or expertise. Examples of interest groups include the National Rifle Association (NRA) for gun rights and the Sierra Club for environmental conservation. By mobilizing resources and public support, interest groups seek to shape legislation and government actions.