Also, climate change. Climate refugees are making up an increasing percentage of immigrants (as well as contributing to an increase in the total number of immigrants) and that trend is only going to accelerate.
To be clear, it isn't the fault of destitute people in developing countries that they're being displaced due to climate change caused by rich people in developed countries.
In fact, the point I was really trying to get at is that right-wingers worldwide are manufacturing a refugee crisis with their environmental policy, and then using that as an excuse to crack down on minorities.