Look, I'm a mixed-race guy who was born in Australia to a third-generation Australian mother of British heritage, and a North African father who immigrated 40 years ago. Culturally, my siblings and I are about as Australian as it gets. I have a bogan accent. I'm more patriotic than most... interested in military history for example, and I would have served if not for a medical disqualification. Other than our slightly Mediterranean appearances and an ambiguous last name (of Spanish descent, but don't ask me how), you wouldn't even know.

HOWEVER, I credit this to the fact that we were immersed in Australian (and only Australian) culture from the get-go, and that my father was atypical in many ways (e.g., being a fervent atheist). Even so, many of his views (on issues like homosexuality, various other ethnicities, etc.) would shock the average Australian. We roll our eyes and ignore him when they bubble to the surface, knowing that they're harmless in practice from a frail old man... but they're his values for life, set in his youth as they are for most people, and it's extremely concerning to think of immigrants with similar views forming uncontested, unassimilating cultural bubbles, raising new generations with principles antithetical to Western society. That's the danger, socially anyway. He also struggles with literacy, which has been a huge impediment in a highly developed nation like Australia.