Single-interest groups are organizations that advocate for a specific issue or concern. These groups can also be referred to as special interest groups, advocacy groups, or advocacy organizations. These organizations often work to influence public policies, government decisions, and popular opinions on a particular issue. They may use various tactics, such as lobbying, campaigning, or grassroots organizing, to achieve their goals. Some examples of single-interest groups include environmental organizations, labor unions, and animal rights groups. Regardless of their cause or focus, single-interest groups play an essential role in shaping public discourse and policies on important issues and concerns.