We'll just need our own swarm of drones to protect us from these ones. In Neal Stephenson's [Diamond Age](https://en.wikipedia.org/wiki/The_Diamond_Age https:/

We'll just need our own swarm of drones to protect us from these ones. In Neal Stephenson's [Diamond Age](https://en.wikipedia.org/wiki/The_Diamond_Age https://en.wikipedia.org/wiki/The_Diamond_Age) each neighborhood has an invisible border of these murder drones that won't let you pass.