Information about the degree of one’s genetic overlap with ethnic outgroups has been emphasized in genocides, is frequently learned about through media reporting, and is increasingly being accessed via personal genetic testing services. However, the consequence of learning about whether your own ethnic group is either genetically related to, or genetically distinct from, a disliked ethnic group remains unknown.
People are emotionally affected by the actions of their in-group. Social and political psychology has focused on self-critical emotions, like shame and guilt, because they should motivate self-correction. However, studies of domestic and international examples show that moral self-criticism is not so straightforward.