They are past the point of being able to be overrun and have grown too large and well trained. They make their own power, food, clean water, sewage treatment, and are very well trained.
At this point the niggers could descend on them and they would dominate with little to no losses. Plus I’m sure they have secret defences all throughout that city they don’t advertise. If the niggers could take them they would have already by this point. They’re just too powerful
Paradise is literally a matter of demographics