Russia’s invasion of Ukraine is only four days old, but already 500,000 Ukrainians have become refugees, according the United Nations Refugee Agency. Ukrainians are fleeing on foot, by train and by car to reach neighboring countries. Many endure long journeys, crowds and queues at stations and borders, with limited access to food and shelter. With European countries hosting large numbers of refugees, people were quick to denounce the glaring differences in the treatment of Ukrainian refugees to that of Afghan and Syrian refugees, who have often been victims of racism.