I suppose one could consider the poorest of the poor in the cities economic refugees in a sense. They are migrants from the farm lands where they have been displaced by machines. Also they have been made redundant from the factories through globalization and automation. As Tanda notes the robust males are controlled through the criminal justice System, prision.
Also, the migrants may be traditional Europeans displaced by civil war between Westerns and immigrants. It will be much harder to turn away thousands of Dutch, German, Spanish, Sweedish, etc. it will be interesting to see how the political parties react to immigration by West Europeans.