The document examines the use of social media data, particularly from Twitter, to understand perceptions and interactions of refugees and migrants in Europe, especially in the context of humanitarian issues and xenophobia. It details a project conducted by UNHCR and Global Pulse that analyzed sentiment and interactions following significant events, including terrorist attacks, revealing insights into public attitudes towards displaced populations. The findings indicate that while the overall sentiment was mostly neutral or supportive, there were notable expressions of xenophobia, suggesting the need for ongoing monitoring and integration of social media insights into humanitarian decision-making.