Scary as current drones are, they are nothing compared to how crazy things are going to get very quickly. Think of completely power-autonomous drones, the size

Scary as current drones are, they are nothing compared to how crazy things are going to get very quickly. Think of completely power-autonomous drones, the size of a wasp, swarming by the millions in the sky. The swarming feature alone would render most people helpless against an attack, or their sheer presence. To this, add distributed intelligence features, and networked control. The swarm becomes something akin to an intelligent, flying, all-seeing liquid. Then think of the drop in price that will enable this to become the dominant method of surveillance, policing, and military operations. There will quickly be nothing stopping dictatorships from buying billions of them, making them ubiquitous and all-pervasive. Killing, threatening and controlling billions of people suddenly becomes quite cheap, efficient, easy and cost-effective. Don't like those people demonstrating in your city? Send the swarms.