It may not be racism as in disliking a certain group or type of people but in being stuck and over loaded with other country's problems of over population. What usually causes rebellion certainly not enough jobs or a chicken in every pot but overpopulation and leaders who refuse to listen to the majorities. What happens if for instance China has a heat wave and cannot feed or keep the people in the manor they like. China has aprox 6 billion people and in worse case a billion want to come to Europe, is that Europe's problem. Where do you cut it off. Take Finland, they don't have a population problem but place thousands of more people on them and what do you have. Take Germany, after the war, they needed street sweepers and the like so they invited in the quest workers who became citizens, brought in the relatives and had many children and now with new immigration are coming up with all kinds of problems and prejudice. If you have 20% unemployment you probably have 15% to many people.