How would you propose to demarcate those who possess citizenship, particularly those of the second generation? That may well be a Constitutional pit far worse than what you propose.
I'd start with ending wog incoming travel and immigration, and then move to deporting legal wog immigrants who are still without citizenship. It would send a warning to those who've recently earned it, and those who are second generation. I think the lessons of England (bombings) Holland (murdered film maker), France (riots), and Australia (riots) must not be ignored.