Far-right mostly uses migrants as an easy scapegoats for any problem. In many countries I have seen migrants taken advantage of (worse work condition, employers not paying taxes, no healthcare provided, children have worse education, no insurance, etc).

I wouldn't even mind if they would be honest about what they claim (being nationalist), but I don't see any right wing party talking seriously about programs to encourage natality, reduce poverty or improve education. Blaming a generic category for your problems rarely solves said problems.

So, for me the boogeyman is talking about superfluous generic topics rather than solutions to problems I see: education, natality, energy, industry.