We locate our review of recent social scientific literature on non-Western migrants in Western liberal democracies within two opposing master narratives: a subtractive and an additive view of migration. Within this framework, we bring to light the contemporary conceptualizations of non-Western migrants in psychology by focusing on trauma. We then examine the cultural and moral clashes that sometimes arise from trans-global migration and the psychology of integration. We end by highlighting the importance of further research on cultural pluralism and omniculturalism to help foster more peaceful and diverse societies.