Answer: Aliens
Step-by-step explanation:
This is based on the episode of the ''Twilight Zone'' titled, ''The Monsters Are Due on Maple Street.''
In it, there is a power outage on Maple Street and a boy named Tommy suggests that it was aliens that caused it based on his having read about alien invasions.
Although the adults do not believe this at first, they eventually start to suspect each other and this leads to a riot. It is then revealed that it really was aliens that were responsible. These aliens go from neighbourhood to neighborhood doing what they just did so that humanity would crumble from infighting.