In this book, contributors analyze the knowledge about human mobility, its interaction with news and social media, and the way this impacts the attitudes of local societies and the integration of immigrants. After a general contextualization of migration dynamics in Southern Europe and its impact during the 21st Century, the central chapters of the book offer the results of three scientific studies conducted in Spain, Italy, and Greece about the representation of migration in news media and social platforms. These studies consist of an analysis of the frames used in news photographs about migrants and refugees in relevant news outlets; a computational study of online hate speech in social media based on racism and xenophobia; and a comprehensive qualitative evaluation of the perceptions that journalists specializing in migration may have about the interconnection between migration and journalism. Scholars of communication, migration studies, and journalism will find this book of particular interest.