Television brings images of rich countries into poor countries, and we have of cheap air travel.
These two things means millions all over the world will want to leave their current poor country and move to a rich country.
While there has always been immigration, it has never been on such a scale, and I can see it being a big problem in years to come.
The problem is that the indiginous population of any country expect it to be at a certain standard, and to see millions of people from third world countries arriving and bringing their third world standards with them can be upsetting.
I live in a city which has a large immigrant population, and every area they settle in has been ruined. I cannot name one area that has been imporved by immigrants.
We have hundreds of thousands of people in our country who have no right to be here, pay no tax or other contribution, yet use our services.
I am afraid to say that many "western" countries may well have civil wars in years to come, between the indiginous population and the immigrants.
We saw signs in Paris last year where whole immigrant populations rioted.
I fear for Europe.