The 1951 Convention Relating to the Status of Refugees (“Refugee Convention”) defines ‘persecution’ based on five enumerated grounds: race, religion, nationality, membership of a particular social group, and political opinion. This list of protected groups has not changed in the nearly 70 years since its inception, although the political and social context that gave rise to the Refugee Convention has changed. This article examines how ‘membership in a particular social group’ (“MPSG”) has been interpreted, then surveys international human rights law, transnational criminal law, international humanitarian law, and international criminal law instruments to determine whether MPSG can encompass the broader protections afforded under other international law regimes. It concludes that the enumerated grounds are largely consistent with other instruments and protects, or at least has the potential to protect, many of the other categories through MPSG. However, as this ground is subject to domestic judicial interpretation and various analytical approaches taken in different countries, protection could be enhanced by amending the Refugee Convention to explicitly include additional protected groups from these other areas of international law, specifically international human rights law and international criminal law.
Protected Groups in Refugee Law and International Law