I disagree. there has been a deliberate shift in many European countries to bring in swathes of immigrants and the public was expected to shut up and take it in silence. Anyone who raised concerns was labelled a racist, bigot, xenophobe etc.
It doesn't really work like that.
The massive over-reach by the EU was bound to create a rise in political partys like this. They were just too stupid/arrogant to see/acknowledge it.