And when the government uses that data to round you up? Sure maybe you aren't an immigrant... but are you in the next group they target, or the group after that?

Maybe not, but does that matter when they use an advertising profile to make your life hell before determining you're not in the problem group? Will they even bother to check? They already have been hassling and detaining citizens on similar sloppy suspicions around immigration.

Even if you're a perfect aryan and think you're safe from the current regime... will the next one have the same notion of perfect?