Not as callous as pinning all social problems on migrants who mostly just want economic opportunity, and who generally commit crime at lower levels than the domestic population. Nor is it as callous as shrugging off the social and economic losses inflicted on those countries when they were colonized in the first place, or 'granting' them freedom without compensation for the looting, murder, and de facto enslavement.

working class people

I've got a feeling you're not a socialist, though.

pseudoscience

FUD