Why do some people fear and dislike refugees and immigrants? Hypothesis: People fear themselves......

Some people have it better than other people. Those people would maybe rather buy some unnecessary things than help people who live in garbage dumps out in the world. The rich people fear that the poor people will come and take the wealth and act as they did. In other words they fear themselves. This includes a fear of inequality, but also a racist thought that immigrants cannot prosper to the same extent as the locals or more than themselves. It is also known that those who favour right-wing policy - which usually includes inequality, are usually more opposed to immigrants. Maybe it's because they themselves are most afraid of being underneath.  I also believe that nationalism, other religions and “superiorism” can contribute to dislike of immigrants and lack of love?