Across Europe, and in the context of a post-BREXIT situation, society is having to accommodate to large numbers of people from diverse cultures. There is a reported increase in xenophobic incidents, bullying and social exclusion, indicating that diversity runs the risk of intolerance and prejudice. This is played out in all manner of social situations in schools and universities, in the community and in the workplace. This discussion paper, written by three U.K. Social Scientists representing the disciplines of psychology, criminology, education and sociology, focuses on the legal and moral aspects of the issue as well as on interventions that promote tolerance and xenophilia in a range of social contexts. It concludes with recommendations to social scientists in all European countries to enter the debate and carry out research in this challenging and highly topical field.