Which excerpt from the speech includes the use of metaphor?
“we have also come to this hallowed spot to remind america of the fierce urgency of now.”
“but there is something that i must say to my people who stand on the warm threshold which leads into the palace of justice.”
“we can never be satisfied as long as the negro is the victim of unspeakable horrors of police brutality.”
"with this faith we will be able to work together, to pray together, to struggle together, to go to jail together, to stand up for freedom together, knowing that we will be free one day.”

“We can never be satisfied as long as the Negro is the victim of unspeakable horrors of police brutality.”

Explanation:

Metaphor is a picture of language. It is widely used, in speech and writing, to establish a transference of meaning from one word to another, from non-explicit comparison. With the metaphor, it is possible to compare without having to use a connective, (for example “how”), which could fit naturally into the sentence.

We can see the use of the metaphor in the phrase "We can never be satisfied as long as the Negro is the victim of unspeakable horrors of police brutality." Where the negro was implicitly compared with a victim.

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