This thesis examines how 'othering' discourse can be used to construct and negotiate boundaries and shape collective identities within online spaces. Through a mixed-method approach of thematic analysis and a netnographic study, and by drawing on theoretical concepts of online othering and identity formation, this thesis explores how the Gamergate community r/KotakuInAction can be understood in relation to Gamergate, the Alt-Right and society at large. The results show that the community perceive and construct the SJW as a common adversary – a monstrous representation of feminism, progressiveness and political correctness. The analysis also revealed how racist rhetorics and white male anxieties characterize the communitys' othering discourse. Through an in-depth study of user-submitted comment, this thesis argues that r/KotakuInAction's collective identity is fluid and reactionary in nature, characterized by a discourse that is indicative of Alt-Right ideology and white male supremacy. Future research should further explore the network of communities that r/KotakuInAction is part of, as well as examine how the community transform over time.