You realize that without the influence of workers the poverty will explode because noone can work for the pensions of all the old people?
Also parrallel societies are created by the main societies. You know the main societies where people with the same ideology as you hunt people in the streets for having the wrong skin colour, or looking muslim or jewish or gay.
The reactionaries and fascist deliberately hinder integration so they have a scapegoat to blame when they rob the people. But we already see, that immigrants and refugees are not enough so they revert back to attacking Jews and LGBT communities.