A special interest group (SIG) represents a specific segment of society that seeks to influence public policy and decision-making to fulfill particular objectives. These organizations advocate for diverse causes—such as environmental protection, business interests, or labor rights—by lobbying government officials and mobilizing public support. SIGs often provide expertise, resources, and access to policymakers, enhancing their chances of shaping legislation. The influence of these groups can be contentious, as they may prioritize their interests over broader societal concerns, leading to debates on ethical lobbying practices.