A special interest group refers to INDIVIDUAL OR ORGANISATION THAT SHARE COMMON CONCERN.
A special interest group refers to a group of people who shared interest in a particular issue. Members of such group usually work together to ensure that they get solution to the issue in which they have interest. Sometimes, such groups seek to influence government decisions in favor of their interests. For instance, a group that has interest in keeping the environment free from pollution will do all they can to ensure that the government made laws that reduce environmental pollution.
