Destructive belief systems and violent behavior within and between groups and identities

This special issue celebrates 25 years of the Sage journal Group Processes and Intergroup Relations. In this article, we use examples of the current sociopolitical climate to highlight the importance of the scientific inquiry into group processes and intergroup relations. Ingrained identities that arise from groups are responsible for causing wars, protests, community clashes with law enforcement, violence, climate change, major public health crises, and societal change. However, just as blame goes to groups, collectives can be harnessed for solutions. This special issue contains 13 articles that showcase the diversity of research in Group Processes and Intergroup Relations, all of which contribute to theory advancement and the application of science to real world issues.