They wield and apply real force [in the wide sense - from crude violence to making citizens pay taxes, etc..] to the real people outside. The only known practical approach here the human race has so far come up with is to have their application of force be a subject to the strictest formal control possible. Unfortunately, we see erosion of such control, and unfortunately there is no reversal of the trend on the horizon...

Watching "Battlestar Galactica", 3rd season beginning. Cylons trying to live peacefully with humans they occupied on New Caprica. "Either we increase control or we lose control" ...