Binge watchers of Netflix's Black Mirror, released on Friday, understand that the only thing more terrifying than a swarm of bees, is a swarm of robotic bees harnessed to a nefarious end. The final episode, "Hated in the Nation," is showrunner Charlie Brooker's pièce de résistance, a truly terrifying imagination of the near future that comes a little too close to the truth for comfort. The super-long season finale takes aim at the real, destructive power of swarms, online and IRL. In this episode, (spoilers ahead) the villains are robotic bees, made to pollinate crops in the absence of real insects, but hacked, so that instead they go after the targets of online dragnets. Anyone marked with the #DeathTo hashtag might soon find themselves swarmed by tiny drones that fly up their nose and short-circuit their brain as their victim meets an extraordinarily painful end.