Two people are walking a dog outside. A giant vaccum cleaner is in the air in front of them.
Vacuum cleaners aren't that large and they don't fly.
Where did the vacuum come from?
I have a feeling they are going to treat us like dirt.
scene: the sidewalk description: Two people are walking a dog outside. A giant vaccum cleaner is in the air in front of them. uncanny: Vacuum cleaners aren't that large and they don't fly. entities: Vacuum, Alien_abduction. caption: I have a feeling they are going to treat us like dirt.
Vacuums suck up dirt, and to be "treated like dirt" means to be treated poorly. The people are worried that because the aliens came in a vacuum, they will be literally and figuratively treated like dirt.