What type of figurative language is used in this sentence from george orwell’s novel keep aspidistra flying?

the public are swine; advertising is the rattling of a stick inside a swill-bucket.

a. flashback
b. oxymoron
c. euphemism
d. metaphor

Martin luther king jr often spoke of a day in the future when he hoped that his children would be judged not by their skin color but instead by their character. write a narrative essay about a moment in your life when you were judged by something other than the content of your character. use narrative techniques to develop experiencies, events, and characters