boy won't they be surprised that the advanced culture they all want to live in, but attack at every turn, disappears like a fart in the wind, leaving them living in the same filth and decay that their ancestors lived in back in their homelands.

And they shouldn't be, considering they've done this time and again in various places, often the ones that were once "colonized." R.I.P. Rhodesia. And it doesn't even have to be about race, although there is plenty of crossover, but in it's more about mindset. Communists do this exact same pattern, usually against their own countrymen.

Reminds me of joke: What did communists use for light before candles?

Electricity.