'Somebody either wants or doesn't mind this inward flow of economic migrants. '
You have to understand the objectives of the globalists and globalisation. The elites want a united one world governance system where national sovereignty is diminished and nation states disappear and the world is governed at the global level by s supranational elite a bit like the UN.
Karl Popper was at the LSE and developed the Open Society philosophy. George Soris was at the LSE and was a pupil of Popper and promotes Open Society and funds lots of NGOs that help that objective. He also funds the Democrats in the United States.
The EU is part of the removal of sovereignty of nation states. Anyone who opposes the EU is termed a "Little Englander" or xenpohobe like Farage or Le Pen or the Hungarian Orban etc because they are in favour of national sobbereignty and control of borders.
The rise of populism in Europe threatens the elite's EU integration project and the people are unhappy with that project to a large extent.
There has been a destabilisation of the Middle East which is leading to a destabilisation of Europe with the elite saying that the answer is "more Europe", "closer integration", new European border force etc. But Orban in Hungary and Poland etc are pulling Europe in a different direction.
The rise of populism and nationalism threatens the Open Society. John McDonnell said on the Andrew Marr Show that it is inevitable that by the end of the century that national borders will no longer exist.
"Inevitably in this century we will have open borders," he said.
"We are seeing it in Europe already.
"The movement of peoples across the globe will mean that borders are almost going to become irrelevant by the end of this century so we should be preparing for that and explaining why people move."
www.thetelegraphandargus.co.uk/news/national/14242971.UK_must_act_on_migrants_as_borders_become__irrelevant___argues_John_McDonnell/
This is the socialist one world dream, which is exactly what the super rich globalisation elites also want.
They know it is not popular and that people like Trump will oppose it.